diff --git a/README.md b/README.md
index 6a622c7..65623b2 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,7 @@ Der Launcher konzentriert sich auf den Alltag: Instanz anlegen, Konto auswählen
 - Reimport überschreibt vorhandene Instanzen mit gleichem Namen statt Dubletten anzulegen
 - Export, Kopieren, Gruppieren und Verwalten von Instanzen
 - Mehrfachauswahl mit Strg-Klick für Sammellöschen mehrerer Instanzen
+- Globales Backup und Wiederherstellung für alle Instanzen direkt im Einstellungsbereich
 - Verwaltung von Welten, Screenshots und Spielordnern direkt aus dem Launcher
 - Bedrock-Bereich für Start und Verwaltung vorhandener Bedrock-Daten unter Windows
 - Update-Funktion für neue Launcher-Versionen
@@ -41,6 +42,8 @@ Für die meisten Nutzer ist die Setup-Version die bessere Wahl.
 
 Die portable Datei ist praktisch zum Mitnehmen, braucht beim Öffnen aber in der Regel etwas länger.
 
+Automatische Updates bleiben dabei sauber getrennt: Die Setup-Version erhält nur Setup-Updates, die portable Variante nur Portable-Updates. Ein Wechsel zwischen beiden Varianten passiert nicht automatisch.
+
 ## Voraussetzungen
 
 - Windows x64
@@ -71,6 +74,17 @@ Wenn bereits eine Instanz mit demselben Namen existiert, wird sie beim Import er
 
 Beim Import aus dem offiziellen Minecraft Launcher werden nur echte benutzerdefinierte Profile angezeigt. Standardprofile wie Latest Release oder Latest Snapshot werden ausgeblendet. Nutzt ein Profil den gemeinsamen Standard-Spielordner, übernimmt AeroMC daraus nur spielrelevante Daten wie Mods, Welten und Konfiguration statt den kompletten Launcher-Cache zu kopieren.
 
+## Backup und Wiederherstellung
+
+Im Bereich Einstellungen > Backup können komplette Sicherungen aller Instanzen erstellt und wieder eingespielt werden.
+
+- Backups werden automatisch unter Dokumente\AeroMC Launcher\Backups gespeichert
+- Gesichert werden alle Instanzen sowie die Launcher-Einstellungen
+- Microsoft-Konten und Tokens werden bewusst nicht mitgesichert
+- Vorhandene Backups werden im Wiederherstellen-Bereich direkt in einem Dropdown aufgelistet
+
+Wichtig: Beim Wiederherstellen werden alle aktuell vorhandenen Instanzen mit dem Inhalt des gewählten Backups überschrieben. Die Launcher-Einstellungen werden ebenfalls aus dem Backup übernommen.
+
 ## Was AeroMC verwaltet
 
 - Minecraft-Versionen und gemeinsame Spieldateien
diff --git a/package-lock.json b/package-lock.json
index 503b462..9a55185 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,16 +1,18 @@
 {
   "name": "aeromc",
-  "version": "1.0.0-beta",
+  "version": "1.0.1-beta",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "aeromc",
-      "version": "1.0.0-beta",
+      "version": "1.0.1-beta",
       "license": "MIT",
       "dependencies": {
+        "archiver": "^7.0.1",
         "skinview3d": "^3.4.2",
-        "undici": "^6.28.0"
+        "undici": "^6.28.0",
+        "unzipper": "^0.12.5"
       },
       "devDependencies": {
         "electron": "^28.0.0",
@@ -312,7 +314,6 @@
       "version": "8.0.2",
       "resolved": "https://registry.npmjs.org/@isaacs/cliui/-/cliui-8.0.2.tgz",
       "integrity": "sha512-O8jcjabXaleOG9DQ0+ARXWZBTfnP4WNAqzuiJK7ll44AmxGKv/J2M4TPjxjY3znBCfvBXFzucm1twdyFybFqEA==",
-      "dev": true,
       "license": "ISC",
       "dependencies": {
         "string-width": "^5.1.2",
@@ -330,7 +331,6 @@
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       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-6.2.2.tgz",
       "integrity": "sha512-Bq3SmSpyFHaWjPk8If9yc6svM8c56dB5BAtW4Qbw5jHTwwXXcTLoRMkpDJp6VL0XzlWaCHTXrkFURMYmD0sLqg==",
-      "dev": true,
       "license": "MIT",
       "engines": {
         "node": ">=12"
@@ -343,7 +343,6 @@
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-      "dev": true,
       "license": "MIT",
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@@ -356,14 +355,12 @@
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-      "dev": true,
       "license": "MIT"
     },
     "node_modules/@isaacs/cliui/node_modules/string-width": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-5.1.2.tgz",
       "integrity": "sha512-HnLOCR3vjcY8beoNLtcjZ5/nxn2afmME6lhrDrebokqMap+XbeW8n9TXpPDOqdGK5qcI3oT0GKTW6wC7EMiVqA==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
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@@ -381,7 +378,6 @@
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-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "ansi-regex": "^6.2.2"
@@ -397,7 +393,6 @@
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       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-8.1.0.tgz",
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-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "ansi-styles": "^6.1.0",
@@ -493,7 +488,6 @@
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-      "dev": true,
       "license": "MIT",
       "optional": true,
       "engines": {
@@ -685,6 +679,18 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/abort-controller": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/abort-controller/-/abort-controller-3.0.0.tgz",
+      "integrity": "sha512-h8lQ8tacZYnR3vNQTgibj+tODHI5/+l06Au2Pcriv/Gmet0eaj4TwWH41sO9wnHDiQsEj19q0drzdWdeAHtweg==",
+      "license": "MIT",
+      "dependencies": {
+        "event-target-shim": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=6.5"
+      }
+    },
     "node_modules/agent-base": {
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
@@ -729,7 +735,6 @@
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-      "dev": true,
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@@ -739,7 +744,6 @@
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-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "color-convert": "^2.0.1"
@@ -853,82 +857,93 @@
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     "node_modules/archiver": {
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-      "resolved": "https://registry.npmjs.org/archiver/-/archiver-5.3.2.tgz",
-      "integrity": "sha512-+25nxyyznAXF7Nef3y0EbBeqmGZgeN/BxHX29Rs39djAfaFalmQ89SE6CWyDCHzGL0yt/ycBtNOmGTW0FyGWNw==",
-      "dev": true,
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/archiver/-/archiver-7.0.1.tgz",
+      "integrity": "sha512-ZcbTaIqJOfCc03QwD468Unz/5Ir8ATtvAHsK+FdXbDIbGfihqh9mrvdcYunQzqn4HrvWWaFyaxJhGZagaJJpPQ==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
-        "archiver-utils": "^2.1.0",
+        "archiver-utils": "^5.0.2",
         "async": "^3.2.4",
-        "buffer-crc32": "^0.2.1",
-        "readable-stream": "^3.6.0",
+        "buffer-crc32": "^1.0.0",
+        "readable-stream": "^4.0.0",
         "readdir-glob": "^1.1.2",
-        "tar-stream": "^2.2.0",
-        "zip-stream": "^4.1.0"
+        "tar-stream": "^3.0.0",
+        "zip-stream": "^6.0.1"
       },
       "engines": {
-        "node": ">= 10"
+        "node": ">= 14"
       }
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     "node_modules/archiver-utils": {
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-      "resolved": "https://registry.npmjs.org/archiver-utils/-/archiver-utils-2.1.0.tgz",
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+      },
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+      "resolved": "https://registry.npmjs.org/minipass/-/minipass-7.1.3.tgz",
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+      "license": "BlueOak-1.0.0",
+      "engines": {
+        "node": ">=16 || 14 >=14.17"
+      }
+    },
+    "node_modules/archiver/node_modules/buffer-crc32": {
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+      "license": "MIT",
+      "engines": {
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@@ -964,7 +979,6 @@
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       "license": "MIT"
     },
     "node_modules/async-exit-hook": {
@@ -994,18 +1008,110 @@
         "node": ">= 4.0.0"
       }
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+    "node_modules/b4a": {
+      "version": "1.8.1",
+      "resolved": "https://registry.npmjs.org/b4a/-/b4a-1.8.1.tgz",
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+      "license": "Apache-2.0",
+      "peerDependencies": {
+        "react-native-b4a": "*"
+      },
+      "peerDependenciesMeta": {
+        "react-native-b4a": {
+          "optional": true
+        }
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-      "dev": true,
       "license": "MIT"
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+    "node_modules/bare-events": {
+      "version": "2.9.1",
+      "resolved": "https://registry.npmjs.org/bare-events/-/bare-events-2.9.1.tgz",
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+      "license": "Apache-2.0",
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@@ -1035,11 +1141,26 @@
         "readable-stream": "^3.4.0"
       }
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+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/text-decoder/-/text-decoder-1.2.7.tgz",
+      "integrity": "sha512-vlLytXkeP4xvEq2otHeJfSQIRyWxo/oZGEbXrtEEF9Hnmrdly59sUbzZ/QgyWuLYHctCHxFF4tRQZNQ9k60ExQ==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "b4a": "^1.6.4"
+      }
+    },
     "node_modules/three": {
       "version": "0.156.1",
       "resolved": "https://registry.npmjs.org/three/-/three-0.156.1.tgz",
@@ -3974,6 +4372,54 @@
         "node": ">= 4.0.0"
       }
     },
+    "node_modules/unzipper": {
+      "version": "0.12.5",
+      "resolved": "https://registry.npmjs.org/unzipper/-/unzipper-0.12.5.tgz",
+      "integrity": "sha512-tXYOi9R57Uj/2Z25SOs5RRSzq886MBQj2gY8dPL+xl/kv6s6SvByoKfAtvfVeEuhntWDgjd2o9p2lb4TVPAz0A==",
+      "license": "MIT",
+      "dependencies": {
+        "bluebird": "~3.7.2",
+        "duplexer2": "~0.1.4",
+        "fs-extra": "11.3.1",
+        "graceful-fs": "^4.2.2",
+        "node-int64": "^0.4.0"
+      }
+    },
+    "node_modules/unzipper/node_modules/fs-extra": {
+      "version": "11.3.1",
+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-11.3.1.tgz",
+      "integrity": "sha512-eXvGGwZ5CL17ZSwHWd3bbgk7UUpF6IFHtP57NYYakPvHOs8GDgDe5KJI36jIJzDkJ6eJjuzRA8eBQb6SkKue0g==",
+      "license": "MIT",
+      "dependencies": {
+        "graceful-fs": "^4.2.0",
+        "jsonfile": "^6.0.1",
+        "universalify": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=14.14"
+      }
+    },
+    "node_modules/unzipper/node_modules/jsonfile": {
+      "version": "6.2.1",
+      "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-6.2.1.tgz",
+      "integrity": "sha512-zwOTdL3rFQ/lRdBnntKVOX6k5cKJwEc1HdilT71BWEu7J41gXIB2MRp+vxduPSwZJPWBxEzv4yH1wYLJGUHX4Q==",
+      "license": "MIT",
+      "dependencies": {
+        "universalify": "^2.0.0"
+      },
+      "optionalDependencies": {
+        "graceful-fs": "^4.1.6"
+      }
+    },
+    "node_modules/unzipper/node_modules/universalify": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-2.0.1.tgz",
+      "integrity": "sha512-gptHNQghINnc/vTGIk0SOFGFNXw7JVrlRUtConJRlvaw6DuX0wO5Jeko9sWrMBhh+PsYAZ7oXAiOnf/UKogyiw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 10.0.0"
+      }
+    },
     "node_modules/uri-js": {
       "version": "4.4.1",
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
@@ -3995,9 +4441,7 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
       "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==",
-      "dev": true,
-      "license": "MIT",
-      "peer": true
+      "license": "MIT"
     },
     "node_modules/verror": {
       "version": "1.10.1",
@@ -4019,7 +4463,6 @@
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
       "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
-      "dev": true,
       "license": "ISC",
       "dependencies": {
         "isexe": "^2.0.0"
@@ -4054,7 +4497,6 @@
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
       "integrity": "sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "ansi-styles": "^4.0.0",
@@ -4143,42 +4585,17 @@
       }
     },
     "node_modules/zip-stream": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/zip-stream/-/zip-stream-4.1.1.tgz",
-      "integrity": "sha512-9qv4rlDiopXg4E69k+vMHjNN63YFMe9sZMrdlvKnCjlCRWeCBswPPMPUfx+ipsAWq1LXHe70RcbaHdJJpS6hyQ==",
-      "dev": true,
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/zip-stream/-/zip-stream-6.0.1.tgz",
+      "integrity": "sha512-zK7YHHz4ZXpW89AHXUPbQVGKI7uvkd3hzusTdotCg1UxyaVtg0zFJSTfW/Dq5f7OBBVnq6cZIaC8Ti4hb6dtCA==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
-        "archiver-utils": "^3.0.4",
-        "compress-commons": "^4.1.2",
-        "readable-stream": "^3.6.0"
+        "archiver-utils": "^5.0.0",
+        "compress-commons": "^6.0.2",
+        "readable-stream": "^4.0.0"
       },
       "engines": {
-        "node": ">= 10"
-      }
-    },
-    "node_modules/zip-stream/node_modules/archiver-utils": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/archiver-utils/-/archiver-utils-3.0.4.tgz",
-      "integrity": "sha512-KVgf4XQVrTjhyWmx6cte4RxonPLR9onExufI1jhvw/MQ4BB6IsZD5gT8Lq+u/+pRkWna/6JoHpiQioaqFP5Rzw==",
-      "dev": true,
-      "license": "MIT",
-      "peer": true,
-      "dependencies": {
-        "glob": "^7.2.3",
-        "graceful-fs": "^4.2.0",
-        "lazystream": "^1.0.0",
-        "lodash.defaults": "^4.2.0",
-        "lodash.difference": "^4.5.0",
-        "lodash.flatten": "^4.4.0",
-        "lodash.isplainobject": "^4.0.6",
-        "lodash.union": "^4.6.0",
-        "normalize-path": "^3.0.0",
-        "readable-stream": "^3.6.0"
-      },
-      "engines": {
-        "node": ">= 10"
+        "node": ">= 14"
       }
     }
   }
diff --git a/package.json b/package.json
index 80bf517..88aa248 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "aeromc",
   "productName": "AeroMC",
-  "version": "1.0.0-beta",
+  "version": "1.0.1-beta",
   "description": "AeroMC – Instanz-basierter Minecraft-Launcher (à la MultiMC/Prism)",
   "homepage": "https://M_Viper.de",
   "main": "src/main.js",
@@ -39,7 +39,9 @@
     "electron-builder": "^24.0.0"
   },
   "dependencies": {
+    "archiver": "^7.0.1",
     "skinview3d": "^3.4.2",
-    "undici": "^6.28.0"
+    "undici": "^6.28.0",
+    "unzipper": "^0.12.5"
   }
 }
diff --git a/src/backup.js b/src/backup.js
new file mode 100644
index 0000000..686e735
--- /dev/null
+++ b/src/backup.js
@@ -0,0 +1,440 @@
+'use strict';
+
+const archiver = require('archiver');
+const fs = require('fs');
+const os = require('os');
+const path = require('path');
+const { pipeline } = require('stream/promises');
+const unzipper = require('unzipper');
+
+function pad2(value) {
+  return String(value).padStart(2, '0');
+}
+
+function defaultBackupFileName(date = new Date()) {
+  return 'AeroMC-Backup-' +
+    date.getFullYear() + '-' +
+    pad2(date.getMonth() + 1) + '-' +
+    pad2(date.getDate()) + '_' +
+    pad2(date.getHours()) + '-' +
+    pad2(date.getMinutes()) + '-' +
+    pad2(date.getSeconds()) +
+    '.zip';
+}
+
+function defaultBackupDir(documentsDir) {
+  return path.join(documentsDir, 'AeroMC Launcher', 'Backups');
+}
+
+function resolveAutoBackupPath(documentsDir, date = new Date()) {
+  const dir = defaultBackupDir(documentsDir);
+  ensureDir(dir);
+
+  const baseName = defaultBackupFileName(date);
+  const ext = path.extname(baseName);
+  const stem = baseName.slice(0, -ext.length);
+  let attempt = 0;
+  let candidate = path.join(dir, baseName);
+
+  while (fs.existsSync(candidate)) {
+    attempt += 1;
+    candidate = path.join(dir, `${stem}-${attempt}${ext}`);
+  }
+
+  return candidate;
+}
+
+function listGlobalBackups(documentsDir) {
+  const dir = defaultBackupDir(documentsDir);
+  ensureDir(dir);
+
+  return fs.readdirSync(dir, { withFileTypes: true })
+    .filter((entry) => entry.isFile() && /\.zip$/i.test(entry.name) && !/\.partial\.zip$/i.test(entry.name))
+    .map((entry) => {
+      const filePath = path.join(dir, entry.name);
+      const stat = fs.statSync(filePath);
+      return {
+        name: entry.name,
+        path: filePath,
+        size: stat.size,
+        modifiedAt: stat.mtime.toISOString(),
+      };
+    })
+    .sort((a, b) => {
+      const timeDiff = new Date(b.modifiedAt).getTime() - new Date(a.modifiedAt).getTime();
+      return timeDiff || a.name.localeCompare(b.name, 'de');
+    });
+}
+
+function ensureDir(dir) {
+  if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true });
+}
+
+function countInstanceDirs(instancesDir) {
+  if (!fs.existsSync(instancesDir)) return 0;
+  return fs.readdirSync(instancesDir, { withFileTypes: true }).filter((entry) => entry.isDirectory()).length;
+}
+
+function readJson(file, fallback) {
+  try {
+    return JSON.parse(fs.readFileSync(file, 'utf8').replace(/^\uFEFF/, ''));
+  } catch {
+    return fallback;
+  }
+}
+
+function writeJson(file, data) {
+  ensureDir(path.dirname(file));
+  fs.writeFileSync(file, JSON.stringify(data, null, 2), 'utf8');
+}
+
+function emitProgress(cb, mode, percent, detail) {
+  if (!cb) return;
+  cb({ mode, percent: Math.max(0, Math.min(100, Math.round(percent))), detail: detail || '' });
+}
+
+function normalizeZipEntryPath(entryPath) {
+  const parts = String(entryPath || '')
+    .replace(/\\/g, '/')
+    .split('/')
+    .filter(Boolean);
+
+  if (!parts.length) return '';
+  if (parts.some((part) => part === '.' || part === '..')) {
+    throw new Error('Das Backup-Archiv enthält ungültige Pfade.');
+  }
+
+  return path.join(...parts);
+}
+
+async function extractBackupArchive(sourcePath, destinationDir, options) {
+  const opts = options || {};
+  const onProgress = opts.onProgress;
+  const mode = opts.mode || 'restore';
+  const startPercent = opts.startPercent ?? 5;
+  const endPercent = opts.endPercent ?? 18;
+  const detail = opts.detail || 'Entpacke Backup';
+  const directory = await unzipper.Open.file(sourcePath);
+  const files = directory.files || [];
+  const fileEntries = files.filter((entry) => entry.type !== 'Directory');
+  const totalBytes = fileEntries.reduce((sum, entry) => sum + Number(entry.uncompressedSize || 0), 0);
+  let processedBytes = 0;
+  let processedEntries = 0;
+
+  ensureDir(destinationDir);
+  if (!files.length) {
+    emitProgress(onProgress, mode, endPercent, detail + ' abgeschlossen');
+    return;
+  }
+
+  for (const entry of files) {
+    const relativePath = normalizeZipEntryPath(entry.path);
+    if (!relativePath) continue;
+
+    const targetPath = path.join(destinationDir, relativePath);
+    if (entry.type === 'Directory') {
+      ensureDir(targetPath);
+      continue;
+    }
+
+    ensureDir(path.dirname(targetPath));
+    await pipeline(entry.stream(), fs.createWriteStream(targetPath));
+
+    processedBytes += Number(entry.uncompressedSize || 0);
+    processedEntries += 1;
+    const ratio = totalBytes > 0
+      ? Math.max(0, Math.min(1, processedBytes / totalBytes))
+      : Math.max(0, Math.min(1, processedEntries / Math.max(1, fileEntries.length)));
+    const percent = startPercent + ((endPercent - startPercent) * ratio);
+    emitProgress(onProgress, mode, percent, detail + ' ...');
+  }
+}
+
+function createBackupArchive(options) {
+  const opts = options || {};
+  const instancesDir = opts.instancesDir;
+  const settingsFile = opts.settingsFile;
+  const includeSettings = opts.includeSettings !== false;
+  const backupInfo = opts.backupInfo || {};
+  const destinationPath = opts.destinationPath;
+  const onProgress = opts.onProgress;
+  const mode = opts.mode || 'create';
+  const startPercent = opts.startPercent ?? 15;
+  const endPercent = opts.endPercent ?? 98;
+  const detail = opts.detail || 'Packe ZIP-Archiv';
+
+  return new Promise((resolve, reject) => {
+    ensureDir(path.dirname(destinationPath));
+
+    const output = fs.createWriteStream(destinationPath);
+    const archive = archiver('zip', { store: true });
+    let done = false;
+
+    const fail = (err) => {
+      if (done) return;
+      done = true;
+      try { archive.destroy(); } catch { /* ignore */ }
+      try { output.destroy(); } catch { /* ignore */ }
+      reject(err);
+    };
+
+    output.on('close', () => {
+      if (done) return;
+      done = true;
+      resolve({ bytes: archive.pointer() });
+    });
+    output.on('error', fail);
+    archive.on('error', fail);
+    archive.on('warning', (err) => {
+      if (err && err.code === 'ENOENT') return;
+      fail(err);
+    });
+    archive.on('progress', (progress) => {
+      const totalBytes = progress && progress.fs ? progress.fs.totalBytes : 0;
+      const processedBytes = progress && progress.fs ? progress.fs.processedBytes : 0;
+      if (!totalBytes) return;
+
+      const ratio = Math.max(0, Math.min(1, processedBytes / totalBytes));
+      const percent = startPercent + ((endPercent - startPercent) * ratio);
+      emitProgress(onProgress, mode, percent, detail + ' ...');
+    });
+
+    archive.pipe(output);
+    if (fs.existsSync(instancesDir)) archive.directory(instancesDir, 'instances');
+    else archive.append('', { name: 'instances/.keep' });
+
+    if (includeSettings && settingsFile && fs.existsSync(settingsFile)) {
+      archive.file(settingsFile, { name: 'settings.json' });
+    }
+
+    archive.append(`${JSON.stringify(backupInfo, null, 2)}\n`, { name: 'backup-info.json' });
+
+    try {
+      const finalizeResult = archive.finalize();
+      if (finalizeResult && typeof finalizeResult.catch === 'function') finalizeResult.catch(fail);
+    } catch (err) {
+      fail(err);
+    }
+  });
+}
+
+function copyDirContentsTracked(sourceDir, targetDir, options) {
+  const opts = options || {};
+  const mode = opts.mode || 'create';
+  const onProgress = opts.onProgress;
+  const startPercent = opts.startPercent ?? 0;
+  const endPercent = opts.endPercent ?? 100;
+  const detailPrefix = opts.detailPrefix || 'Kopiere';
+
+  ensureDir(targetDir);
+  if (!fs.existsSync(sourceDir)) {
+    emitProgress(onProgress, mode, endPercent, detailPrefix + ' abgeschlossen');
+    return;
+  }
+
+  const entries = fs.readdirSync(sourceDir, { withFileTypes: true });
+  if (!entries.length) {
+    emitProgress(onProgress, mode, endPercent, detailPrefix + ' abgeschlossen');
+    return;
+  }
+
+  entries.forEach((entry, index) => {
+    fs.cpSync(path.join(sourceDir, entry.name), path.join(targetDir, entry.name), { recursive: true });
+    const ratio = (index + 1) / entries.length;
+    const percent = startPercent + ((endPercent - startPercent) * ratio);
+    emitProgress(onProgress, mode, percent, `${detailPrefix}: ${entry.name}`);
+  });
+}
+
+function moveDirTracked(sourceDir, targetDir, options) {
+  const opts = options || {};
+  const mode = opts.mode || 'restore';
+  const onProgress = opts.onProgress;
+  const startPercent = opts.startPercent ?? 0;
+  const endPercent = opts.endPercent ?? 100;
+  const detailPrefix = opts.detailPrefix || 'Verschiebe';
+
+  if (!fs.existsSync(sourceDir)) {
+    emitProgress(onProgress, mode, endPercent, detailPrefix + ' abgeschlossen');
+    return;
+  }
+
+  ensureDir(path.dirname(targetDir));
+  try {
+    fs.renameSync(sourceDir, targetDir);
+    emitProgress(onProgress, mode, endPercent, detailPrefix + ' abgeschlossen');
+    return;
+  } catch (err) {
+    if (!err || !['EXDEV', 'EPERM', 'EACCES'].includes(err.code)) throw err;
+  }
+
+  copyDirContentsTracked(sourceDir, targetDir, opts);
+  try { fs.rmSync(sourceDir, { recursive: true, force: true }); } catch { /* ignore */ }
+}
+
+function resolveExtractedBackupRoot(extractDir) {
+  if (fs.existsSync(path.join(extractDir, 'instances'))) return extractDir;
+  const entries = fs.readdirSync(extractDir, { withFileTypes: true }).filter((entry) => entry.isDirectory());
+  if (entries.length === 1) {
+    const nested = path.join(extractDir, entries[0].name);
+    if (fs.existsSync(path.join(nested, 'instances'))) return nested;
+  }
+  return null;
+}
+
+async function createGlobalBackup(options) {
+  const instancesDir = options && options.instancesDir;
+  const userDataDir = options && options.userDataDir;
+  const destinationPath = options && options.destinationPath;
+  const includeSettings = !options || options.includeSettings !== false;
+  const onProgress = options && options.onProgress;
+  if (!instancesDir || !userDataDir || !destinationPath) throw new Error('Backup-Parameter unvollständig.');
+
+  const settingsFile = path.join(userDataDir, 'settings.json');
+  const workingArchivePath = destinationPath.replace(/\.zip$/i, '') + '.partial.zip';
+  const backupInfo = {
+    createdAt: new Date().toISOString(),
+    instanceCount: countInstanceDirs(instancesDir),
+    includeSettings,
+    app: 'AeroMC',
+    version: 1,
+  };
+
+  try {
+    emitProgress(onProgress, 'create', 5, 'Bereite Backup vor');
+    emitProgress(onProgress, 'create', 10, 'Ermittle Backup-Inhalt');
+
+    if (fs.existsSync(destinationPath)) fs.unlinkSync(destinationPath);
+    if (fs.existsSync(workingArchivePath)) fs.unlinkSync(workingArchivePath);
+    emitProgress(onProgress, 'create', 90, 'Packe ZIP-Archiv');
+    await createBackupArchive({
+      instancesDir,
+      settingsFile,
+      includeSettings,
+      backupInfo,
+      destinationPath: workingArchivePath,
+      mode: 'create',
+      onProgress,
+      startPercent: 15,
+      endPercent: 98,
+      detail: 'Packe ZIP-Archiv',
+    });
+    emitProgress(onProgress, 'create', 99, 'Finalisiere Backup');
+    fs.renameSync(workingArchivePath, destinationPath);
+    emitProgress(onProgress, 'create', 100, 'Backup abgeschlossen');
+
+    return {
+      ok: true,
+      path: destinationPath,
+      instanceCount: countInstanceDirs(instancesDir),
+      includedSettings: includeSettings && fs.existsSync(settingsFile),
+    };
+  } finally {
+    try {
+      if (fs.existsSync(workingArchivePath)) fs.rmSync(workingArchivePath, { force: true });
+    } catch { /* ignore */ }
+  }
+}
+
+async function restoreGlobalBackup(options) {
+  const instancesDir = options && options.instancesDir;
+  const userDataDir = options && options.userDataDir;
+  const sourcePath = options && options.sourcePath;
+  const includeSettings = !!(options && options.includeSettings);
+  const onProgress = options && options.onProgress;
+  const instancesDirSetting = options && Object.prototype.hasOwnProperty.call(options, 'instancesDirSetting')
+    ? options.instancesDirSetting
+    : null;
+  if (!instancesDir || !userDataDir || !sourcePath) throw new Error('Restore-Parameter unvollständig.');
+
+  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'aeromc-restore-'));
+  const extractDir = path.join(tmp, 'extract');
+  const rollbackDir = path.join(tmp, 'rollback');
+  const rollbackInstances = path.join(rollbackDir, 'instances');
+  const settingsFile = path.join(userDataDir, 'settings.json');
+  const rollbackSettings = path.join(rollbackDir, 'settings.json');
+  let settingsPreviouslyExisted = false;
+
+  try {
+    ensureDir(extractDir);
+    emitProgress(onProgress, 'restore', 5, 'Entpacke Backup');
+    await extractBackupArchive(sourcePath, extractDir, {
+      mode: 'restore',
+      onProgress,
+      startPercent: 5,
+      endPercent: 18,
+      detail: 'Entpacke Backup',
+    });
+
+    const backupRoot = resolveExtractedBackupRoot(extractDir);
+    if (!backupRoot) throw new Error('Das Archiv enthält kein gültiges AeroMC-Backup.');
+    emitProgress(onProgress, 'restore', 18, 'Backup geprüft');
+
+    const sourceInstances = path.join(backupRoot, 'instances');
+    const sourceSettings = path.join(backupRoot, 'settings.json');
+    ensureDir(rollbackDir);
+
+    emitProgress(onProgress, 'restore', 25, 'Sichere aktuellen Stand');
+    moveDirTracked(instancesDir, rollbackInstances, {
+      mode: 'restore',
+      onProgress,
+      startPercent: 28,
+      endPercent: 40,
+      detailPrefix: 'Sichere aktuelle Instanzen',
+    });
+    settingsPreviouslyExisted = fs.existsSync(settingsFile);
+    if (settingsPreviouslyExisted) fs.copyFileSync(settingsFile, rollbackSettings);
+
+    ensureDir(path.dirname(instancesDir));
+    moveDirTracked(sourceInstances, instancesDir, {
+      mode: 'restore',
+      onProgress,
+      startPercent: 45,
+      endPercent: 78,
+      detailPrefix: 'Stelle Instanzen wieder her',
+    });
+
+    let restoredSettings = false;
+    if (includeSettings && fs.existsSync(sourceSettings)) {
+      const restored = readJson(sourceSettings, {});
+      restored.instancesDir = instancesDirSetting;
+      writeJson(settingsFile, restored);
+      restoredSettings = true;
+      emitProgress(onProgress, 'restore', 90, 'Stelle Einstellungen wieder her');
+    } else {
+      emitProgress(onProgress, 'restore', 90, 'Einstellungen übersprungen');
+    }
+
+    emitProgress(onProgress, 'restore', 100, 'Wiederherstellen abgeschlossen');
+
+    return {
+      ok: true,
+      path: sourcePath,
+      instanceCount: countInstanceDirs(instancesDir),
+      restoredSettings,
+    };
+  } catch (err) {
+    try {
+      if (fs.existsSync(instancesDir)) fs.rmSync(instancesDir, { recursive: true, force: true });
+      if (fs.existsSync(rollbackInstances)) fs.cpSync(rollbackInstances, instancesDir, { recursive: true });
+      else ensureDir(instancesDir);
+
+      if (includeSettings) {
+        if (fs.existsSync(rollbackSettings)) fs.copyFileSync(rollbackSettings, settingsFile);
+        else if (!settingsPreviouslyExisted && fs.existsSync(settingsFile)) fs.rmSync(settingsFile, { force: true });
+      }
+    } catch { /* ignore rollback errors */ }
+    throw err;
+  } finally {
+    try { fs.rmSync(tmp, { recursive: true, force: true }); } catch { /* ignore */ }
+  }
+}
+
+module.exports = {
+  createGlobalBackup,
+  restoreGlobalBackup,
+  defaultBackupFileName,
+  defaultBackupDir,
+  listGlobalBackups,
+  resolveAutoBackupPath,
+};
\ No newline at end of file
diff --git a/src/cfimport.js b/src/cfimport.js
new file mode 100644
index 0000000..e84f483
--- /dev/null
+++ b/src/cfimport.js
@@ -0,0 +1,196 @@
+'use strict';
+
+/*
+ * cfimport.js – Instanzen aus dem CurseForge-Launcher übernehmen
+ * ---------------------------------------------------------------
+ * Unterstützt sowohl den Launcher-Wurzelordner als auch direkt den
+ * Instances-Ordner. Gelesen werden nach Möglichkeit minecraftinstance.json
+ * und die vorhandenen Spieldaten im Profilordner.
+ */
+
+const fs = require('fs');
+const os = require('os');
+const path = require('path');
+
+const META_FILES = ['minecraftinstance.json', 'instance.json'];
+
+function readJson(file, fallback) {
+  try {
+    return JSON.parse(fs.readFileSync(file, 'utf8').replace(/^\uFEFF/, ''));
+  } catch {
+    return fallback;
+  }
+}
+
+function existingMetaFile(dir) {
+  return META_FILES.map((name) => path.join(dir, name)).find((file) => fs.existsSync(file)) || null;
+}
+
+function metaVersion(meta) {
+  return String(
+    (meta && (
+      meta.gameVersion || meta.minecraftVersion || meta.mcVersion ||
+      (meta.installedModpack && meta.installedModpack.gameVersion)
+    )) || ''
+  ).trim();
+}
+
+function resolveInstancesDir(inputPath) {
+  if (!inputPath || !fs.existsSync(inputPath)) return null;
+  const directNames = new Set(['instances', 'minecraftinstances']);
+  if (directNames.has(path.basename(inputPath).toLowerCase())) return inputPath;
+
+  const candidates = [
+    path.join(inputPath, 'Instances'),
+    path.join(inputPath, 'instances'),
+    path.join(inputPath, 'minecraftInstances'),
+    path.join(inputPath, 'Minecraft', 'Instances'),
+    path.join(inputPath, 'minecraft', 'Instances'),
+  ];
+
+  const looksLikeWindowsInstall =
+    /curseforge windows/i.test(inputPath) ||
+    (fs.existsSync(path.join(inputPath, 'CurseForge.exe')) && fs.existsSync(path.join(inputPath, 'resources')));
+  if (looksLikeWindowsInstall) {
+    candidates.push(
+      path.join(os.homedir(), 'curseforge', 'minecraft', 'Instances'),
+      path.join(os.homedir(), 'CurseForge', 'minecraft', 'Instances'),
+    );
+  }
+  return candidates.find((candidate) => fs.existsSync(candidate)) || null;
+}
+
+function normalizeLoaderVersion(loader, rawValue, mcVersion) {
+  let value = String(rawValue || '').trim();
+  if (!value) return '';
+
+  if (loader === 'forge') {
+    value = value.replace(/^forge-/i, '');
+    if (mcVersion && value.startsWith(mcVersion + '-')) value = value.slice(mcVersion.length + 1);
+    return value;
+  }
+  if (loader === 'neoforge') {
+    return value.replace(/^neoforge-/i, '');
+  }
+  if (loader === 'fabric') {
+    value = value.replace(/^fabric(?:-loader)?-/i, '');
+    if (mcVersion && value.endsWith('-' + mcVersion)) value = value.slice(0, -1 * (mcVersion.length + 1));
+    return value;
+  }
+  if (loader === 'quilt') {
+    value = value.replace(/^quilt(?:-loader)?-/i, '');
+    if (mcVersion && value.endsWith('-' + mcVersion)) value = value.slice(0, -1 * (mcVersion.length + 1));
+    return value;
+  }
+  return value;
+}
+
+function detectLoader(meta, mcVersion) {
+  const raw = meta && (
+    meta.baseModLoader || meta.modLoader || meta.modloader || meta.loader || meta.modLoaderId
+  );
+  const value = typeof raw === 'object'
+    ? (raw.name || raw.id || raw.value || raw.version || '')
+    : (raw || '');
+  const lower = String(value).toLowerCase();
+  const objectVersion = raw && typeof raw === 'object'
+    ? (raw.version || raw.name || raw.id || '')
+    : '';
+
+  if (!lower) return { loader: 'vanilla', loaderVersion: '' };
+  if (lower.includes('neoforge')) return { loader: 'neoforge', loaderVersion: normalizeLoaderVersion('neoforge', objectVersion || value, mcVersion) };
+  if (lower.includes('fabric')) return { loader: 'fabric', loaderVersion: normalizeLoaderVersion('fabric', objectVersion || value, mcVersion) };
+  if (lower.includes('quilt')) return { loader: 'quilt', loaderVersion: normalizeLoaderVersion('quilt', objectVersion || value, mcVersion) };
+  if (lower.includes('forge')) return { loader: 'forge', loaderVersion: normalizeLoaderVersion('forge', objectVersion || value, mcVersion) };
+  return { loader: 'vanilla', loaderVersion: '' };
+}
+
+function detectVersion(meta, loaderVersion) {
+  return metaVersion(meta) || (loaderVersion && loaderVersion.includes('-') ? loaderVersion.split('-')[0] : '');
+}
+
+function findGameDir(dir) {
+  const nested = ['minecraft', '.minecraft']
+    .map((name) => path.join(dir, name))
+    .find((candidate) => fs.existsSync(candidate));
+  if (nested) return nested;
+
+  const markers = ['mods', 'config', 'resourcepacks', 'shaderpacks', 'saves', 'options.txt'];
+  return markers.some((name) => fs.existsSync(path.join(dir, name))) ? dir : null;
+}
+
+function scan(inputPath) {
+  const instancesDir = resolveInstancesDir(inputPath);
+  if (!instancesDir) return { ok: false, reason: 'not-found' };
+
+  const list = [];
+  for (const entry of fs.readdirSync(instancesDir, { withFileTypes: true })) {
+    if (!entry.isDirectory()) continue;
+    const dir = path.join(instancesDir, entry.name);
+    const metaFile = existingMetaFile(dir);
+    const meta = metaFile ? readJson(metaFile, {}) : {};
+    const gameDir = findGameDir(dir);
+    if (!metaFile && !gameDir) continue;
+
+    const versionHint = metaVersion(meta);
+    const loaderInfo = detectLoader(meta, versionHint);
+    list.push({
+      folder: entry.name,
+      dir,
+      name: meta.name || meta.displayName || entry.name,
+      group: '',
+      notes: meta.notes || meta.summary || '',
+      version: versionHint || detectVersion(meta, loaderInfo.loaderVersion),
+      loader: loaderInfo.loader,
+      loaderVersion: loaderInfo.loaderVersion,
+      javaPath: String(meta.javaPath || meta.javaExecutable || '').trim(),
+      minMemMb: Number(meta.minimumMemory || meta.minMemory || meta.minMemAlloc) || null,
+      maxMemMb: Number(meta.maximumMemory || meta.maxMemory || meta.maxMemAlloc || meta.allocatedMemory) || null,
+      gameDir: gameDir || dir,
+      hasGameData: !!gameDir,
+    });
+  }
+  list.sort((a, b) => a.name.localeCompare(b.name));
+  return { ok: true, instancesDir, count: list.length, instances: list };
+}
+
+function copyInto(sourceDir, targetDir) {
+  fs.mkdirSync(targetDir, { recursive: true });
+  for (const name of fs.readdirSync(sourceDir)) {
+    if (META_FILES.includes(name)) continue;
+    fs.cpSync(path.join(sourceDir, name), path.join(targetDir, name), { recursive: true });
+  }
+}
+
+function importOne(store, entry, copyData = true) {
+  const created = store.createOrReplaceImportedInstance({
+    name: entry.name,
+    group: entry.group,
+    notes: entry.notes,
+    minecraft: {
+      version: entry.version,
+      loader: entry.loader,
+      loaderVersion: entry.loaderVersion,
+    },
+  });
+
+  const patch = {};
+  if (entry.javaPath || entry.minMemMb || entry.maxMemMb) {
+    patch.java = {
+      path: entry.javaPath || '',
+      minMemMb: entry.minMemMb || null,
+      maxMemMb: entry.maxMemMb || null,
+      extraArgs: '',
+    };
+  }
+  if (Object.keys(patch).length) store.updateInstance(created.id, patch);
+
+  let copied = false;
+  if (copyData && entry.gameDir && fs.existsSync(entry.gameDir)) {
+    copyInto(entry.gameDir, store.gameDir(created.id));
+    copied = true;
+  }
+  return { id: created.id, name: created.name, copied };
+}
+
+module.exports = { scan, importOne, resolveInstancesDir };
\ No newline at end of file
diff --git a/src/index.html b/src/index.html
index 009de2f..abebfb5 100644
--- a/src/index.html
+++ b/src/index.html
@@ -11,8 +11,7 @@
   <!-- Obere Werkzeugleiste (MultiMC-Stil: Icon + Text) -->
   <header class="toolbar">
     <button id="btn-new" class="tbtn" data-ic="plus">Instanz hinzufügen</button>
-    <button id="btn-import" class="tbtn" data-ic="import" title="Instanz aus .zip importieren">Importieren</button>
-    <button id="btn-modpack" class="tbtn" data-ic="package" title="Modrinth-Modpack (.mrpack)">Modpack</button>
+    <button id="btn-import" class="tbtn" data-ic="import" title="Instanzen importieren">Importieren</button>
     <button id="btn-open-dir" class="tbtn" data-ic="folder" title="Ordner öffnen">Ordner</button>
     <span class="tbsep"></span>
     <button id="btn-bedrock" class="tbtn" data-ic="blocks" title="Minecraft Bedrock (Windows-Ausgabe)">Bedrock</button>
@@ -192,6 +191,7 @@
           <button class="snav" data-pane="pane-start">Start &amp; Java</button>
           <button class="snav" data-pane="pane-network">Netzwerk</button>
           <button class="snav" data-pane="pane-accounts">Konten</button>
+          <button class="snav" data-pane="pane-backup">Backup</button>
           <button class="snav" data-pane="pane-info">Info</button>
         </nav>
         <div class="settings-content">
@@ -229,12 +229,6 @@
                   </div>
                   <small class="hint">Hier werden alle Instanzen als Unterordner mit ihrem Namen gespeichert.</small>
                 </label>
-
-                <label class="field">
-                  <span>Instanzen übernehmen</span>
-                  <button id="btn-mmc" class="btn">Aus MultiMC importieren…</button>
-                  <small class="hint">Übernimmt Instanzen samt Version, Loader, Gruppe und Spieldaten aus einem MultiMC-Ordner.</small>
-                </label>
               </section>
 
               <section class="settings-card">
@@ -426,6 +420,44 @@
             </div>
           </div>
 
+          <div id="pane-backup" class="spane hidden">
+            <div class="settings-hero">
+              <h4>Backup</h4>
+              <p>Alle Instanzen gesammelt als ZIP sichern, bevor größere Änderungen anstehen.</p>
+            </div>
+            <div class="settings-grid">
+              <section class="settings-card settings-card-wide">
+                <h5>Globales Backup</h5>
+                <small class="hint">Backups werden automatisch unter Dokumente/AeroMC Launcher/Backups gespeichert. Instanzen und Launcher-Einstellungen werden gesichert. Konten und Tokens werden nicht mitgesichert.</small>
+                <div class="path-row" style="margin-top:14px">
+                  <button id="s-backup-global" class="btn btn-primary">Backup erstellen</button>
+                  <span id="s-backup-status" class="hint">Noch kein Backup erstellt.</span>
+                </div>
+                <div id="s-backup-progress" class="backup-progress hidden" aria-hidden="true">
+                  <div class="backup-progress-bar"><div id="s-backup-progress-fill" class="backup-progress-fill"></div></div>
+                  <div id="s-backup-progress-text" class="backup-progress-text hint">0 %</div>
+                </div>
+              </section>
+
+              <section class="settings-card settings-card-wide">
+                <h5>Wiederherstellen</h5>
+                <small class="hint">Wähle ein Backup aus Dokumente/AeroMC Launcher/Backups aus. Achtung: Alle vorhandenen Instanzen werden beim Wiederherstellen mit dem Inhalt des Backups überschrieben. Launcher-Einstellungen werden ebenfalls wiederhergestellt. Konten und Tokens bleiben unverändert.</small>
+                <label class="field backup-select-field">
+                  <span>Verfügbares Backup</span>
+                  <select id="s-restore-backup"></select>
+                </label>
+                <div class="path-row" style="margin-top:14px">
+                  <button id="s-restore-global" class="btn">Backup wiederherstellen</button>
+                  <span id="s-restore-status" class="hint">Noch kein Backup wiederhergestellt.</span>
+                </div>
+                <div id="s-restore-progress" class="backup-progress hidden" aria-hidden="true">
+                  <div class="backup-progress-bar"><div id="s-restore-progress-fill" class="backup-progress-fill"></div></div>
+                  <div id="s-restore-progress-text" class="backup-progress-text hint">0 %</div>
+                </div>
+              </section>
+            </div>
+          </div>
+
           <div id="pane-info" class="spane hidden">
             <div class="settings-hero">
               <h4>Info</h4>
@@ -643,6 +675,7 @@
           <span class="upd-arrow">→</span>
           <span id="upd-new" class="upd-newv">–</span>
         </p>
+        <p id="upd-channel" class="upd-channel hint">Update-Kanal: –</p>
         <div id="upd-notes" class="upd-notes"></div>
         <div id="upd-progress" class="upd-progress hidden">
           <div class="upd-bar"><div id="upd-bar-fill" class="upd-bar-fill"></div></div>
@@ -657,41 +690,115 @@
     </div>
   </div>
 
-  <!-- ===================== Dialog: MultiMC-Import ===================== -->
-  <div id="modal-mmc" class="modal hidden">
+  <!-- ===================== Dialog: Import ===================== -->
+  <div id="modal-import" class="modal hidden">
     <div class="modal-card modal-lg">
       <div class="modal-head">
-        <h3>Instanzen aus MultiMC übernehmen</h3>
+        <h3>Importieren</h3>
         <button class="modal-close" data-close>✕</button>
       </div>
       <div class="modal-body">
-        <label class="field">
-          <span>MultiMC-Ordner</span>
-          <div class="path-row">
-            <input id="mmc-path" type="text" placeholder="z. B. E:\Minecraft\MultiMC" />
-            <button id="mmc-pick" class="btn">Wählen…</button>
-            <button id="mmc-scan" class="btn btn-primary">Suchen</button>
-          </div>
-          <small id="mmc-status" class="hint">Gib den Ordner an, in dem MultiMC.exe liegt.</small>
-        </label>
+        <div class="mods-tabs import-tabs">
+          <button id="import-tab-zip" class="mtab on" data-kind="zip">ZIP-Archiv</button>
+          <button id="import-tab-modpack" class="mtab" data-kind="modpack">Modpack</button>
+          <button id="import-tab-mc" class="mtab" data-kind="mc">Minecraft Launcher</button>
+          <button id="import-tab-cf" class="mtab" data-kind="cf">CurseForge</button>
+          <button id="import-tab-mmc" class="mtab" data-kind="mmc">MultiMC / Prism</button>
+        </div>
 
-        <div id="mmc-result" class="hidden">
-          <div class="mmc-bar">
-            <label class="checkbox-field" style="margin:0">
-              <input id="mmc-all" type="checkbox" checked /> <span>Alle auswählen</span>
-            </label>
-            <label class="checkbox-field" style="margin:0">
-              <input id="mmc-copy" type="checkbox" checked /> <span>Spieldaten mitkopieren (Welten, Mods, Konfiguration)</span>
-            </label>
+        <div id="import-pane-zip" class="import-pane">
+          <p class="import-copy">Importiert eine exportierte AeroMC-Instanz aus einem ZIP-Archiv.</p>
+          <p class="hint">Wähle ein Archiv mit einer gültigen instance.json. Der Launcher legt daraus automatisch eine neue Instanz an.</p>
+        </div>
+
+        <div id="import-pane-modpack" class="import-pane hidden">
+          <p class="import-copy">Importiert ein Modrinth-Modpack als neue Instanz.</p>
+          <p class="hint">Unterstützt werden .mrpack und kompatible ZIP-Dateien mit modrinth.index.json.</p>
+        </div>
+
+        <div id="import-pane-mc" class="import-pane hidden">
+          <label class="field">
+            <span>Minecraft-Launcher-Ordner</span>
+            <div class="path-row">
+              <input id="mc-path" type="text" placeholder="z. B. C:\Users\DeinName\AppData\Roaming\.minecraft" />
+              <button id="mc-pick" class="btn">Wählen…</button>
+              <button id="mc-scan" class="btn btn-primary">Suchen</button>
+            </div>
+            <small id="mc-status" class="hint">Leer lassen nutzt automatisch den Standardpfad unter Windows.</small>
+          </label>
+
+          <div id="mc-result" class="hidden">
+            <div class="mmc-bar">
+              <label class="checkbox-field" style="margin:0">
+                <input id="mc-all" type="checkbox" checked /> <span>Alle auswählen</span>
+              </label>
+              <label class="checkbox-field" style="margin:0">
+                <input id="mc-copy" type="checkbox" checked /> <span>Spieldaten mitkopieren (Mods, Welten, Konfiguration)</span>
+              </label>
+            </div>
+            <div id="mc-list" class="mods-list"></div>
+          </div>
+        </div>
+
+        <div id="import-pane-cf" class="import-pane hidden">
+          <label class="field">
+            <span>CurseForge-Instanzen</span>
+            <div class="path-row">
+              <input id="cf-path" type="text" placeholder="z. B. C:\Users\DeinName\curseforge\minecraft\Instances" />
+              <button id="cf-pick" class="btn">Wählen…</button>
+              <button id="cf-scan" class="btn btn-primary">Suchen</button>
+            </div>
+            <small id="cf-status" class="hint">Standardpfad unter Windows: C:\Users\DeinName\curseforge\minecraft\Instances</small>
+          </label>
+
+          <div id="cf-result" class="hidden">
+            <div class="mmc-bar">
+              <label class="checkbox-field" style="margin:0">
+                <input id="cf-all" type="checkbox" checked /> <span>Alle auswählen</span>
+              </label>
+              <label class="checkbox-field" style="margin:0">
+                <input id="cf-copy" type="checkbox" checked /> <span>Spieldaten mitkopieren (Welten, Mods, Konfiguration)</span>
+              </label>
+            </div>
+            <div id="cf-list" class="mods-list"></div>
+          </div>
+        </div>
+
+        <div id="import-pane-mmc" class="import-pane hidden">
+          <label class="field">
+            <span>MultiMC- oder Prism-Ordner</span>
+            <div class="path-row">
+              <input id="mmc-path" type="text" placeholder="z. B. E:\Minecraft\MultiMC" />
+              <button id="mmc-pick" class="btn">Wählen…</button>
+              <button id="mmc-scan" class="btn btn-primary">Suchen</button>
+            </div>
+            <small id="mmc-status" class="hint">Gib den Ordner an, in dem MultiMC.exe oder PrismLauncher.exe liegt.</small>
+          </label>
+
+          <div id="mmc-result" class="hidden">
+            <div class="mmc-bar">
+              <label class="checkbox-field" style="margin:0">
+                <input id="mmc-all" type="checkbox" checked /> <span>Alle auswählen</span>
+              </label>
+              <label class="checkbox-field" style="margin:0">
+                <input id="mmc-copy" type="checkbox" checked /> <span>Spieldaten mitkopieren (Welten, Mods, Konfiguration)</span>
+              </label>
+            </div>
+            <div id="mmc-list" class="mods-list"></div>
           </div>
-          <div id="mmc-list" class="mods-list"></div>
         </div>
       </div>
       <div class="modal-foot">
-        <div id="mmc-progress" class="hint"></div>
+        <div id="mc-progress" class="hint hidden"></div>
+        <div id="mmc-progress" class="hint hidden"></div>
+        <div id="cf-progress" class="hint hidden"></div>
         <div class="spacer"></div>
         <button class="btn" data-close>Abbrechen</button>
-        <button id="mmc-do" class="btn btn-primary" disabled>Übernehmen</button>
+        <button id="import-zip-do" class="btn btn-primary">ZIP wählen…</button>
+        <button id="import-modpack-do" class="btn btn-primary hidden">Modpack wählen…</button>
+        <button id="mc-do" class="btn btn-primary hidden" disabled>Übernehmen</button>
+        <button id="cf-do" class="btn btn-primary hidden" disabled>Übernehmen</button>
+        <button id="mmc-do" class="btn btn-primary hidden" disabled>Übernehmen</button>
       </div>
     </div>
   </div>
diff --git a/src/launcher.js b/src/launcher.js
index 67a99f9..620878b 100644
--- a/src/launcher.js
+++ b/src/launcher.js
@@ -150,6 +150,36 @@ async function prepareLibraries(vj, sharedDir, nativesDir, onProgress) {
   return classpath;
 }
 
+function classpathArtifactKey(filePath, sharedDir) {
+  const libDir = path.join(sharedDir, 'libraries');
+  const rel = path.relative(libDir, filePath);
+  if (rel.startsWith('..') || path.isAbsolute(rel)) return path.normalize(filePath).toLowerCase();
+
+  const parts = rel.split(path.sep);
+  if (parts.length < 4) return rel.replace(/\\/g, '/').toLowerCase();
+
+  const fileName = parts[parts.length - 1];
+  const version = parts[parts.length - 2];
+  const artifact = parts[parts.length - 3];
+  const group = parts.slice(0, -3).join('/').toLowerCase();
+  const base = fileName.replace(/\.[^.]+$/, '');
+  const prefix = `${artifact}-${version}`;
+  const classifier = base.startsWith(prefix + '-') ? base.slice(prefix.length + 1).toLowerCase() : '';
+  return `${group}:${artifact.toLowerCase()}:${classifier}`;
+}
+
+function dedupeClasspath(classpath, sharedDir) {
+  const seen = new Set();
+  const out = [];
+  for (const filePath of classpath) {
+    const key = classpathArtifactKey(filePath, sharedDir);
+    if (seen.has(key)) continue;
+    seen.add(key);
+    out.push(filePath);
+  }
+  return out;
+}
+
 // entpackt eine Natives-JAR (ZIP) nach nativesDir (ohne externe Abhängigkeit)
 async function extractNatives(jarPath, nativesDir, extractRule) {
   ensureDir(nativesDir);
@@ -407,6 +437,8 @@ async function prepareAndLaunch(opts, onProgress) {
     effectiveVj = mergeLoader(vj, fvj);
   }
 
+  const finalClasspath = dedupeClasspath(classpath, opts.sharedDir);
+
   // Ohne Login: alles vorbereitet, aber kein Start (kein Crack-Bypass)
   if (!opts.auth) {
     return {
@@ -425,7 +457,7 @@ async function prepareAndLaunch(opts, onProgress) {
     gameDir: opts.gameDir,
     sharedDir: opts.sharedDir,
     nativesDir,
-    classpath,
+    classpath: finalClasspath,
     minMemMb: opts.minMemMb || 2048,
     maxMemMb: opts.maxMemMb || 4096,
     extraArgs: opts.extraArgs || '',
@@ -475,5 +507,5 @@ async function prepareAndLaunch(opts, onProgress) {
 
 module.exports = {
   prepareAndLaunch, getVersionJson, buildArgs, pickJava, rulesAllow, prepareLibraries, prepareAssets,
-  downloadIfNeeded, extractNatives,
+  downloadIfNeeded, extractNatives, mergeLoader, dedupeClasspath, classpathArtifactKey,
 };
diff --git a/src/main.js b/src/main.js
index bfd7659..1e89336 100644
--- a/src/main.js
+++ b/src/main.js
@@ -20,7 +20,10 @@ const auth = require('./auth');
 const updater = require('./updater');
 const icons = require('./icons');
 const bedrock = require('./bedrock');
+const backup = require('./backup');
 const mmcimport = require('./mmcimport');
+const cfimport = require('./cfimport');
+const mcimport = require('./mcimport');
 
 // undici als globales fetch verwenden -> ermöglicht Proxy via setGlobalDispatcher
 const undici = require('undici');
@@ -412,7 +415,7 @@ async function importMrpack(buf, zip) {
   else if (deps.forge) { loader = 'forge'; loaderVersion = deps.forge; }
   else if (deps.neoforge) { loader = 'neoforge'; loaderVersion = deps.neoforge; }
 
-  const created = store.createInstance({
+  const created = store.createOrReplaceImportedInstance({
     name: index.name || 'Modpack',
     minecraft: { version: deps.minecraft || '', loader, loaderVersion },
   });
@@ -495,8 +498,8 @@ ipcMain.handle('instances:import', async () => {
       throw new Error('Keine gültige Instanz im Archiv (instance.json fehlt).');
     }
     const imported = JSON.parse(fs.readFileSync(path.join(base, 'instance.json'), 'utf8'));
-    const created = store.createInstance({
-      name: (imported.name || 'Import') + ' (Import)',
+    const created = store.createOrReplaceImportedInstance({
+      name: imported.name || 'Import',
       icon: imported.icon || 'grass',
       notes: imported.notes || '',
       minecraft: imported.minecraft || {},
@@ -519,6 +522,54 @@ ipcMain.handle('instances:import', async () => {
   }
 });
 
+ipcMain.handle('backup:global', async () => {
+  const destinationPath = backup.resolveAutoBackupPath(app.getPath('documents'));
+  try {
+    const result = await backup.createGlobalBackup({
+      instancesDir: store.getInstancesDir(),
+      userDataDir: app.getPath('userData'),
+      includeSettings: true,
+      destinationPath,
+      onProgress: (progress) => {
+        if (mainWindow && !mainWindow.isDestroyed()) mainWindow.webContents.send('backup:progress', progress);
+      },
+    });
+    if (mainWindow && !mainWindow.isDestroyed()) {
+      mainWindow.webContents.send('backup:progress', { mode: 'create', percent: 100, detail: 'Backup abgeschlossen' });
+    }
+    return result;
+  } catch (err) {
+    return { ok: false, message: 'Backup fehlgeschlagen: ' + err.message };
+  }
+});
+
+ipcMain.handle('backup:list', async () => backup.listGlobalBackups(app.getPath('documents')));
+
+ipcMain.handle('backup:restore', async (_e, sourcePath) => {
+  if (!sourcePath || !String(sourcePath).trim()) {
+    return { ok: false, message: 'Kein Backup ausgewählt.' };
+  }
+  try {
+    const currentSettings = store.getSettings();
+    const result = await backup.restoreGlobalBackup({
+      sourcePath,
+      instancesDir: store.getInstancesDir(),
+      userDataDir: app.getPath('userData'),
+      includeSettings: true,
+      instancesDirSetting: currentSettings.instancesDir || null,
+      onProgress: (progress) => {
+        if (mainWindow && !mainWindow.isDestroyed()) mainWindow.webContents.send('backup:progress', progress);
+      },
+    });
+    if (mainWindow && !mainWindow.isDestroyed()) {
+      mainWindow.webContents.send('backup:progress', { mode: 'restore', percent: 100, detail: 'Wiederherstellen abgeschlossen' });
+    }
+    return result;
+  } catch (err) {
+    return { ok: false, message: 'Wiederherstellen fehlgeschlagen: ' + err.message };
+  }
+});
+
 // Phase 2: echter Vanilla-Download & -Start (Start selbst ist an Login gebunden).
 ipcMain.handle('instances:launch', async (_e, id, accountId) => {
   const inst = store.getInstance(id);
@@ -666,6 +717,58 @@ ipcMain.handle('mmc:import', (_e, entries, copyData) => {
   return { ok: true, imported: done, failed };
 });
 
+ipcMain.handle('cf:pickFolder', async () => {
+  const res = await dialog.showOpenDialog(mainWindow, {
+    title: 'CurseForge-Ordner wählen (oder direkt den Instances-Ordner)',
+    properties: ['openDirectory'],
+  });
+  return res.canceled ? null : res.filePaths[0];
+});
+
+ipcMain.handle('cf:scan', (_e, folder) => {
+  try { return cfimport.scan(folder); }
+  catch (err) { return { ok: false, reason: err.message }; }
+});
+
+ipcMain.handle('cf:import', (_e, entries, copyData) => {
+  const done = [];
+  const failed = [];
+  for (const entry of entries || []) {
+    try { done.push(cfimport.importOne(store, entry, copyData !== false)); }
+    catch (err) { failed.push({ name: entry.name, message: err.message }); }
+    if (mainWindow && !mainWindow.isDestroyed()) {
+      mainWindow.webContents.send('cf:progress', { current: done.length + failed.length, total: entries.length });
+    }
+  }
+  return { ok: true, imported: done, failed };
+});
+
+ipcMain.handle('mc:pickFolder', async () => {
+  const res = await dialog.showOpenDialog(mainWindow, {
+    title: 'Minecraft-Launcher-Ordner waehlen (meist .minecraft)',
+    properties: ['openDirectory'],
+  });
+  return res.canceled ? null : res.filePaths[0];
+});
+
+ipcMain.handle('mc:scan', (_e, folder) => {
+  try { return mcimport.scan(folder); }
+  catch (err) { return { ok: false, reason: err.message }; }
+});
+
+ipcMain.handle('mc:import', (_e, entries, copyData) => {
+  const done = [];
+  const failed = [];
+  for (const entry of entries || []) {
+    try { done.push(mcimport.importOne(store, entry, copyData !== false)); }
+    catch (err) { failed.push({ name: entry.name, message: err.message }); }
+    if (mainWindow && !mainWindow.isDestroyed()) {
+      mainWindow.webContents.send('mc:progress', { current: done.length + failed.length, total: entries.length });
+    }
+  }
+  return { ok: true, imported: done, failed };
+});
+
 // ---------------------------------------------------------------------------
 // IPC – Minecraft Bedrock (Windows-Store-App)
 // ---------------------------------------------------------------------------
diff --git a/src/mcimport.js b/src/mcimport.js
new file mode 100644
index 0000000..fb8cde2
--- /dev/null
+++ b/src/mcimport.js
@@ -0,0 +1,217 @@
+'use strict';
+
+const fs = require('fs');
+const os = require('os');
+const path = require('path');
+
+const PROFILE_FILES = [
+  'launcher_profiles.json',
+  'launcher_profiles_microsoft_store.json',
+  'launcher_profiles_microsoft_store_2.json',
+];
+
+const ROOT_COPY_DIRS = new Set([
+  'config', 'defaultconfigs', 'kubejs', 'mods', 'resourcepacks', 'screenshots', 'shaderpacks', 'saves',
+]);
+
+const ROOT_COPY_FILE_PATTERNS = [
+  /^options.*\.(txt|of)$/i,
+  /^servers\.dat(?:_old)?$/i,
+  /^usercache\.json$/i,
+  /^tl_skin_cape\.json$/i,
+  /^journeymap.*\.(json|txt|cfg)$/i,
+];
+
+function readJson(file, fallback) {
+  try {
+    return JSON.parse(fs.readFileSync(file, 'utf8').replace(/^\uFEFF/, ''));
+  } catch {
+    return fallback;
+  }
+}
+
+function resolveLauncherRoot(inputPath) {
+  const appData = process.env.APPDATA || path.join(os.homedir(), 'AppData', 'Roaming');
+  const defaultRoot = path.join(appData, '.minecraft');
+  const candidates = [];
+
+  if (inputPath && fs.existsSync(inputPath)) candidates.push(inputPath);
+  candidates.push(defaultRoot);
+
+  for (const candidate of candidates) {
+    for (const profileFile of PROFILE_FILES) {
+      if (fs.existsSync(path.join(candidate, profileFile))) return candidate;
+    }
+  }
+  return null;
+}
+
+function resolveProfileFile(rootDir) {
+  return PROFILE_FILES.map((name) => path.join(rootDir, name)).find((file) => fs.existsSync(file)) || null;
+}
+
+function normalizeLoaderVersion(loader, rawValue, mcVersion) {
+  let value = String(rawValue || '').trim();
+  if (!value) return '';
+
+  if (loader === 'forge') {
+    value = value.replace(/^forge-/i, '');
+    if (mcVersion && value.startsWith(mcVersion + '-')) value = value.slice(mcVersion.length + 1);
+    return value;
+  }
+  if (loader === 'neoforge') return value.replace(/^neoforge-/i, '');
+  if (loader === 'fabric') {
+    value = value.replace(/^fabric(?:-loader)?-/i, '');
+    if (mcVersion && value.endsWith('-' + mcVersion)) value = value.slice(0, -1 * (mcVersion.length + 1));
+    return value;
+  }
+  if (loader === 'quilt') {
+    value = value.replace(/^quilt(?:-loader)?-/i, '');
+    if (mcVersion && value.endsWith('-' + mcVersion)) value = value.slice(0, -1 * (mcVersion.length + 1));
+    return value;
+  }
+  return value;
+}
+
+function parseLastVersionId(lastVersionId) {
+  const raw = String(lastVersionId || '').trim();
+  if (!raw) return { version: '', loader: 'vanilla', loaderVersion: '' };
+
+  let match = raw.match(/^fabric-loader-([^-]+(?:\.[^-]+)*)-(.+)$/i);
+  if (match) return { version: match[2], loader: 'fabric', loaderVersion: normalizeLoaderVersion('fabric', match[1], match[2]) };
+
+  match = raw.match(/^quilt-loader-([^-]+(?:\.[^-]+)*)-(.+)$/i);
+  if (match) return { version: match[2], loader: 'quilt', loaderVersion: normalizeLoaderVersion('quilt', match[1], match[2]) };
+
+  match = raw.match(/^(.+)-forge-([\w.-]+)$/i);
+  if (match) return { version: match[1], loader: 'forge', loaderVersion: normalizeLoaderVersion('forge', match[2], match[1]) };
+
+  match = raw.match(/^forge-(.+)-([\w.-]+)$/i);
+  if (match) return { version: match[1], loader: 'forge', loaderVersion: normalizeLoaderVersion('forge', match[2], match[1]) };
+
+  match = raw.match(/^(.+)-neoforge-([\w.-]+)$/i);
+  if (match) return { version: match[1], loader: 'neoforge', loaderVersion: normalizeLoaderVersion('neoforge', match[2], match[1]) };
+
+  if (/^\d+(?:\.\d+)+(?:-[\w.]+)?$/i.test(raw)) return { version: raw, loader: 'vanilla', loaderVersion: '' };
+  return { version: raw, loader: 'vanilla', loaderVersion: '' };
+}
+
+function parseJavaSettings(javaDir, javaArgs) {
+  const args = String(javaArgs || '').trim();
+  const minMatch = args.match(/(?:^|\s)-Xms(\d+)([mMgG])/);
+  const maxMatch = args.match(/(?:^|\s)-Xmx(\d+)([mMgG])/);
+  const toMb = (match) => {
+    if (!match) return null;
+    const num = Number(match[1]);
+    if (!Number.isFinite(num)) return null;
+    return match[2].toLowerCase() === 'g' ? num * 1024 : num;
+  };
+
+  return {
+    path: String(javaDir || '').trim(),
+    minMemMb: toMb(minMatch),
+    maxMemMb: toMb(maxMatch),
+    extraArgs: args
+      .replace(/(?:^|\s)-Xms\d+[mMgG]/g, ' ')
+      .replace(/(?:^|\s)-Xmx\d+[mMgG]/g, ' ')
+      .replace(/\s+/g, ' ')
+      .trim(),
+  };
+}
+
+function isImportableProfile(profile) {
+  const type = String((profile && profile.type) || '').trim().toLowerCase();
+  if (type === 'latest-release' || type === 'latest-snapshot') return false;
+  const name = String((profile && profile.name) || '').trim();
+  const lastVersionId = String((profile && profile.lastVersionId) || '').trim();
+  return !!(name || lastVersionId);
+}
+
+function shouldCopyRootEntry(name) {
+  if (ROOT_COPY_DIRS.has(name)) return true;
+  return ROOT_COPY_FILE_PATTERNS.some((pattern) => pattern.test(name));
+}
+
+function scan(inputPath) {
+  const rootDir = resolveLauncherRoot(inputPath);
+  if (!rootDir) return { ok: false, reason: 'not-found' };
+
+  const profileFile = resolveProfileFile(rootDir);
+  const json = readJson(profileFile, {});
+  const profiles = json.profiles || {};
+  const list = [];
+  const defaultRoot = path.normalize(rootDir).toLowerCase();
+
+  for (const [id, profile] of Object.entries(profiles)) {
+    if (!isImportableProfile(profile)) continue;
+
+    const name = String(profile.name || '').trim() || String(profile.lastVersionId || '').trim() || id;
+    const parsed = parseLastVersionId(profile.lastVersionId);
+    const gameDir = path.normalize(String(profile.gameDir || rootDir));
+    const java = parseJavaSettings(profile.javaDir, profile.javaArgs);
+
+    list.push({
+      id,
+      name,
+      group: '',
+      notes: 'Importiert aus dem Minecraft Launcher',
+      version: parsed.version,
+      loader: parsed.loader,
+      loaderVersion: parsed.loaderVersion,
+      javaPath: java.path,
+      minMemMb: java.minMemMb,
+      maxMemMb: java.maxMemMb,
+      extraJavaArgs: java.extraArgs,
+      gameDir,
+      hasGameData: fs.existsSync(gameDir),
+      usesDefaultGameDir: gameDir.toLowerCase() === defaultRoot,
+      rootDir,
+    });
+  }
+
+  list.sort((a, b) => a.name.localeCompare(b.name));
+  return { ok: true, rootDir, count: list.length, instances: list };
+}
+
+function copyInto(sourceDir, targetDir, usesDefaultGameDir) {
+  fs.mkdirSync(targetDir, { recursive: true });
+  for (const name of fs.readdirSync(sourceDir)) {
+    if (/^launcher_profiles.*\.json$/i.test(name)) continue;
+    if (name === 'versions' || name === 'libraries' || name === 'assets' || name === 'runtime' || name === 'webcache2') continue;
+    if (usesDefaultGameDir && !shouldCopyRootEntry(name)) continue;
+    fs.cpSync(path.join(sourceDir, name), path.join(targetDir, name), { recursive: true });
+  }
+}
+
+function importOne(store, entry, copyData = true) {
+  const created = store.createOrReplaceImportedInstance({
+    name: entry.name,
+    group: entry.group,
+    notes: entry.notes,
+    minecraft: {
+      version: entry.version,
+      loader: entry.loader,
+      loaderVersion: entry.loaderVersion,
+    },
+  });
+
+  const patch = {};
+  if (entry.javaPath || entry.minMemMb || entry.maxMemMb || entry.extraJavaArgs) {
+    patch.java = {
+      path: entry.javaPath || '',
+      minMemMb: entry.minMemMb || null,
+      maxMemMb: entry.maxMemMb || null,
+      extraArgs: entry.extraJavaArgs || '',
+    };
+  }
+  if (Object.keys(patch).length) store.updateInstance(created.id, patch);
+
+  let copied = false;
+  if (copyData && entry.gameDir && fs.existsSync(entry.gameDir)) {
+    copyInto(entry.gameDir, store.gameDir(created.id), !!entry.usesDefaultGameDir);
+    copied = true;
+  }
+  return { id: created.id, name: created.name, copied };
+}
+
+module.exports = { scan, importOne, parseLastVersionId, resolveLauncherRoot };
\ No newline at end of file
diff --git a/src/mmcimport.js b/src/mmcimport.js
index 7b0452d..69d3789 100644
--- a/src/mmcimport.js
+++ b/src/mmcimport.js
@@ -113,7 +113,7 @@ function scan(inputPath) {
  * store: unser Datenspeicher; copyData: Spielverzeichnis mitkopieren
  */
 function importOne(store, entry, copyData = true) {
-  const created = store.createInstance({
+  const created = store.createOrReplaceImportedInstance({
     name: entry.name,
     group: entry.group,
     notes: entry.notes,
diff --git a/src/preload.js b/src/preload.js
index ee851f2..4683fec 100644
--- a/src/preload.js
+++ b/src/preload.js
@@ -45,6 +45,14 @@ contextBridge.exposeInMainWorld('api', {
   openScreenshot: (id, name) => ipcRenderer.invoke('instance:openScreenshot', id, name),
   launchInstance: (id, accountId) => ipcRenderer.invoke('instances:launch', id, accountId),
   exportInstance: (id) => ipcRenderer.invoke('instances:export', id),
+  createGlobalBackup: () => ipcRenderer.invoke('backup:global'),
+  listGlobalBackups: () => ipcRenderer.invoke('backup:list'),
+  restoreGlobalBackup: (sourcePath) => ipcRenderer.invoke('backup:restore', sourcePath),
+  onBackupProgress: (cb) => {
+    const l = (_e, d) => cb(d);
+    ipcRenderer.on('backup:progress', l);
+    return () => ipcRenderer.removeListener('backup:progress', l);
+  },
   importInstance: () => ipcRenderer.invoke('instances:import'),
   importModpack: () => ipcRenderer.invoke('modpack:import'),
   onLaunchProgress: (cb) => {
@@ -95,6 +103,22 @@ contextBridge.exposeInMainWorld('api', {
     ipcRenderer.on('mmc:progress', l);
     return () => ipcRenderer.removeListener('mmc:progress', l);
   },
+  cfPickFolder: () => ipcRenderer.invoke('cf:pickFolder'),
+  cfScan: (folder) => ipcRenderer.invoke('cf:scan', folder),
+  cfImport: (entries, copyData) => ipcRenderer.invoke('cf:import', entries, copyData),
+  onCfProgress: (cb) => {
+    const l = (_e, d) => cb(d);
+    ipcRenderer.on('cf:progress', l);
+    return () => ipcRenderer.removeListener('cf:progress', l);
+  },
+  mcPickFolder: () => ipcRenderer.invoke('mc:pickFolder'),
+  mcScan: (folder) => ipcRenderer.invoke('mc:scan', folder),
+  mcImport: (entries, copyData) => ipcRenderer.invoke('mc:import', entries, copyData),
+  onMcProgress: (cb) => {
+    const l = (_e, d) => cb(d);
+    ipcRenderer.on('mc:progress', l);
+    return () => ipcRenderer.removeListener('mc:progress', l);
+  },
 
   // Bedrock (Windows-Store-Ausgabe)
   bedrockDetect: () => ipcRenderer.invoke('bedrock:detect'),
diff --git a/src/renderer.js b/src/renderer.js
index 2456736..8738e11 100644
--- a/src/renderer.js
+++ b/src/renderer.js
@@ -473,6 +473,7 @@ const LOADER_LABEL = {
 // ---------- Zustand ----------
 let instances = [];
 let currentDetailId = null;
+let selectedInstanceIds = new Set();
 let editingId = null;
 let confirmAction = null;
 let mcVersionData = null;              // gecachte Mojang-Versionsliste
@@ -525,14 +526,235 @@ function applyTheme(theme) {
 
 // ---------- Instanzen aus MultiMC übernehmen ----------
 let mmcFound = [];
+let cfFound = [];
+let mcFound = [];
+let importKind = 'zip';
 
-function openMmc() {
+async function ensureDefaultMcScan() {
+  if (importKind !== 'mc') return;
+  if (el('mc-path').value.trim()) return;
+  if (mcFound.length) return;
+  await scanMc();
+}
+
+function setImportKind(kind) {
+  importKind = ['zip', 'modpack', 'mc', 'cf', 'mmc'].includes(kind) ? kind : 'zip';
+  ['zip', 'modpack', 'mc', 'cf', 'mmc'].forEach((entryKind) => {
+    el(`import-tab-${entryKind}`).classList.toggle('on', entryKind === importKind);
+    el(`import-pane-${entryKind}`).classList.toggle('hidden', entryKind !== importKind);
+  });
+  el('import-zip-do').classList.toggle('hidden', importKind !== 'zip');
+  el('import-modpack-do').classList.toggle('hidden', importKind !== 'modpack');
+  el('mc-do').classList.toggle('hidden', importKind !== 'mc');
+  el('cf-do').classList.toggle('hidden', importKind !== 'cf');
+  el('mmc-do').classList.toggle('hidden', importKind !== 'mmc');
+  el('mc-progress').classList.toggle('hidden', importKind !== 'mc' || !el('mc-progress').textContent);
+  el('cf-progress').classList.toggle('hidden', importKind !== 'cf' || !el('cf-progress').textContent);
+  el('mmc-progress').classList.toggle('hidden', importKind !== 'mmc' || !el('mmc-progress').textContent);
+}
+
+function openImportDialog(kind = 'zip') {
+  mcFound = [];
+  el('mc-result').classList.add('hidden');
+  el('mc-do').disabled = true;
+  el('mc-progress').textContent = '';
+  el('mc-progress').classList.add('hidden');
+  el('mc-status').textContent = 'Leer lassen nutzt automatisch den Standardpfad unter Windows.';
+  el('cf-result').classList.add('hidden');
+  el('cf-do').disabled = true;
+  el('cf-progress').textContent = '';
+  el('cf-progress').classList.add('hidden');
+  el('cf-status').textContent = 'Standardpfad unter Windows: C:\\Users\\DeinName\\curseforge\\minecraft\\Instances';
   el('mmc-result').classList.add('hidden');
   el('mmc-do').disabled = true;
   el('mmc-progress').textContent = '';
-  el('mmc-status').textContent = 'Gib den Ordner an, in dem MultiMC.exe liegt.';
-  show('modal-mmc');
-  el('mmc-path').focus();
+  el('mmc-progress').classList.add('hidden');
+  el('mmc-status').textContent = 'Gib den Ordner an, in dem MultiMC.exe oder PrismLauncher.exe liegt.';
+  setImportKind(kind);
+  show('modal-import');
+  if (importKind === 'mc') {
+    el('mc-path').focus();
+    ensureDefaultMcScan();
+  }
+  if (importKind === 'cf') el('cf-path').focus();
+  if (importKind === 'mmc') el('mmc-path').focus();
+}
+
+async function runZipImport() {
+  el('import-zip-do').disabled = true;
+  try {
+    const res = await window.api.importInstance();
+    if (res.canceled) return;
+    if (res.ok) {
+      await reload();
+      hide('modal-import');
+      toast('Importiert: ' + res.instance.name);
+      return;
+    }
+    toast(res.message || 'Import fehlgeschlagen.', true);
+  } finally {
+    el('import-zip-do').disabled = false;
+  }
+}
+
+async function runModpackImport() {
+  el('import-modpack-do').disabled = true;
+  status('Importiere Modpack …');
+  try {
+    const res = await window.api.importModpack();
+    status('Bereit'); el('status-right').textContent = '';
+    if (res.canceled) return;
+    if (res.ok) {
+      await reload();
+      hide('modal-import');
+      toast(`Modpack importiert: ${res.instance.name} (${res.fileCount} Dateien)`);
+      return;
+    }
+    toast(res.message || 'Modpack-Import fehlgeschlagen.', true);
+  } finally {
+    status('Bereit'); el('status-right').textContent = '';
+    el('import-modpack-do').disabled = false;
+  }
+}
+
+async function scanMc() {
+  const folder = el('mc-path').value.trim();
+  el('mc-status').textContent = 'Suche Launcher-Profile …';
+  const res = await window.api.mcScan(folder);
+  if (!res.ok) {
+    el('mc-status').textContent = '✖ Dort wurde kein launcher_profiles.json gefunden.';
+    el('mc-result').classList.add('hidden');
+    el('mc-do').disabled = true;
+    return;
+  }
+  mcFound = res.instances;
+  if (!folder && res.rootDir) el('mc-path').value = res.rootDir;
+  el('mc-status').textContent = `${res.count} Profil${res.count === 1 ? '' : 'e'} gefunden.`;
+  el('mc-result').classList.remove('hidden');
+  el('mc-all').checked = true;
+  renderMcList();
+}
+
+function renderMcList() {
+  const box = el('mc-list');
+  box.innerHTML = '';
+  if (!mcFound.length) { box.innerHTML = '<div class="mods-empty">Keine Profile gefunden.</div>'; return; }
+  mcFound.forEach((inst, idx) => {
+    const row = document.createElement('label');
+    row.className = 'mmc-item';
+    const loaderTxt = inst.loader === 'vanilla'
+      ? 'Vanilla'
+      : (LOADER_LABEL[inst.loader] || inst.loader) + (inst.loaderVersion ? ' ' + inst.loaderVersion : '');
+    const meta = [inst.version || 'ohne Version', loaderTxt, inst.usesDefaultGameDir ? 'Standard-Spielordner' : 'eigener Spielordner']
+      .filter(Boolean).join(' · ');
+    row.innerHTML =
+      `<input type="checkbox" data-idx="${idx}" checked />
+       <div class="mod-info">
+         <div class="mmc-name">${escapeHtml(inst.name)}</div>
+         <div class="mmc-meta">${escapeHtml(meta)}</div>
+       </div>`;
+    box.appendChild(row);
+  });
+  updateMcButton();
+}
+
+function selectedMc() {
+  return [...document.querySelectorAll('#mc-list input[type=checkbox]')]
+    .filter((c) => c.checked)
+    .map((c) => mcFound[Number(c.dataset.idx)]);
+}
+
+function updateMcButton() {
+  const n = selectedMc().length;
+  el('mc-do').disabled = n === 0;
+  el('mc-do').textContent = n ? `${n} übernehmen` : 'Übernehmen';
+}
+
+async function runMcImport() {
+  const entries = selectedMc();
+  if (!entries.length) return;
+  const copy = el('mc-copy').checked;
+  el('mc-do').disabled = true;
+  el('mc-progress').textContent = 'Übernehme …';
+  el('mc-progress').classList.remove('hidden');
+
+  const res = await window.api.mcImport(entries, copy);
+  await reload();
+  hide('modal-import');
+  const n = res.imported.length;
+  const f = res.failed.length;
+  toast(`${n} Profil${n === 1 ? '' : 'e'} aus dem Minecraft Launcher übernommen${f ? ` · ${f} fehlgeschlagen` : ''}.`, f > 0);
+  if (instances.length) await selectInstance(instances[0].id);
+}
+
+async function scanCf() {
+  const folder = el('cf-path').value.trim();
+  if (!folder) { el('cf-status').textContent = 'Bitte zuerst einen Ordner angeben.'; return; }
+  el('cf-status').textContent = 'Suche Instanzen …';
+  const res = await window.api.cfScan(folder);
+  if (!res.ok) {
+    el('cf-status').textContent = '✖ Dort wurde kein CurseForge-Instances-Ordner gefunden.';
+    el('cf-result').classList.add('hidden');
+    el('cf-do').disabled = true;
+    return;
+  }
+  cfFound = res.instances;
+  el('cf-status').textContent = `${res.count} Instanz${res.count === 1 ? '' : 'en'} gefunden.`;
+  el('cf-result').classList.remove('hidden');
+  el('cf-all').checked = true;
+  renderCfList();
+}
+
+function renderCfList() {
+  const box = el('cf-list');
+  box.innerHTML = '';
+  if (!cfFound.length) { box.innerHTML = '<div class="mods-empty">Keine Instanzen gefunden.</div>'; return; }
+  cfFound.forEach((inst, idx) => {
+    const row = document.createElement('label');
+    row.className = 'mmc-item';
+    const loaderTxt = inst.loader === 'vanilla'
+      ? 'Vanilla'
+      : (LOADER_LABEL[inst.loader] || inst.loader) + (inst.loaderVersion ? ' ' + inst.loaderVersion : '');
+    const meta = [inst.version || 'ohne Version', loaderTxt]
+      .filter(Boolean).join(' · ');
+    row.innerHTML =
+      `<input type="checkbox" data-idx="${idx}" checked />
+       <div class="mod-info">
+         <div class="mmc-name">${escapeHtml(inst.name)}</div>
+         <div class="mmc-meta">${escapeHtml(meta)}</div>
+       </div>`;
+    box.appendChild(row);
+  });
+  updateCfButton();
+}
+
+function selectedCf() {
+  return [...document.querySelectorAll('#cf-list input[type=checkbox]')]
+    .filter((c) => c.checked)
+    .map((c) => cfFound[Number(c.dataset.idx)]);
+}
+
+function updateCfButton() {
+  const n = selectedCf().length;
+  el('cf-do').disabled = n === 0;
+  el('cf-do').textContent = n ? `${n} übernehmen` : 'Übernehmen';
+}
+
+async function runCfImport() {
+  const entries = selectedCf();
+  if (!entries.length) return;
+  const copy = el('cf-copy').checked;
+  el('cf-do').disabled = true;
+  el('cf-progress').textContent = 'Übernehme …';
+  el('cf-progress').classList.remove('hidden');
+
+  const res = await window.api.cfImport(entries, copy);
+  await reload();
+  hide('modal-import');
+  const n = res.imported.length;
+  const f = res.failed.length;
+  toast(`${n} CurseForge-Instanz${n === 1 ? '' : 'en'} übernommen${f ? ` · ${f} fehlgeschlagen` : ''}.`, f > 0);
+  if (instances.length) await selectInstance(instances[0].id);
 }
 
 async function scanMmc() {
@@ -594,10 +816,11 @@ async function runMmcImport() {
   const copy = el('mmc-copy').checked;
   el('mmc-do').disabled = true;
   el('mmc-progress').textContent = 'Übernehme …';
+  el('mmc-progress').classList.remove('hidden');
 
   const res = await window.api.mmcImport(entries, copy);
   await reload();
-  hide('modal-mmc');
+  hide('modal-import');
   const n = res.imported.length;
   const f = res.failed.length;
   toast(`${n} Instanz${n === 1 ? '' : 'en'} übernommen${f ? ` · ${f} fehlgeschlagen` : ''}.`, f > 0);
@@ -741,11 +964,12 @@ function showUpdateDialog(info) {
   pendingUpdate = info;
   el('upd-current').textContent = formatVersionLabel(info.currentVersion);
   el('upd-new').textContent = formatVersionLabel(info.latestVersion);
+  el('upd-channel').textContent = `Update-Kanal: ${info.installKind === 'portable' ? 'Portable' : 'Setup'}`;
   el('upd-notes').textContent = (info.notes || '').trim() || 'Keine Änderungshinweise hinterlegt.';
   el('upd-progress').classList.add('hidden');
   el('upd-bar-fill').style.width = '0%';
   el('upd-install').disabled = !info.asset;
-  el('upd-install').textContent = info.asset ? 'Installieren' : 'Kein Installer im Release';
+  el('upd-install').textContent = info.asset ? 'Installieren' : `Kein passendes ${info.installKind === 'portable' ? 'Portable' : 'Setup'}-Update im Release`;
   show('modal-update');
 }
 
@@ -954,9 +1178,114 @@ function applyIcons(root = document) {
 }
 
 // ---------- Instanz-Kacheln ----------
+const SINGLE_SELECTION_BUTTON_IDS = [
+  'p-play', 'p-offline', 'p-edit', 'p-notes', 'p-mods', 'p-worlds', 'p-screens',
+  'p-mcfolder', 'p-configfolder', 'p-instfolder', 'p-shortcut', 'p-export', 'p-copy',
+];
+
+function orderedSelectedInstanceIds() {
+  return instances.map((inst) => inst.id).filter((id) => selectedInstanceIds.has(id));
+}
+
+function syncCardSelectionUi() {
+  document.querySelectorAll('.card').forEach((card) => {
+    card.classList.toggle('sel', selectedInstanceIds.has(card.dataset.id));
+  });
+}
+
+function setSingleSelectionActionsDisabled(disabled) {
+  SINGLE_SELECTION_BUTTON_IDS.forEach((id) => { el(id).disabled = disabled; });
+  const groupLine = el('p-groupline');
+  groupLine.style.pointerEvents = disabled ? 'none' : '';
+  groupLine.style.color = disabled ? 'var(--dim)' : '';
+}
+
+async function refreshSelectionPanel() {
+  const selectedIds = orderedSelectedInstanceIds();
+  const count = selectedIds.length;
+  const panelC = el('p-content');
+  const panelE = el('p-empty');
+  syncCardSelectionUi();
+
+  if (!count) {
+    currentDetailId = null;
+    setSingleSelectionActionsDisabled(false);
+    el('p-delete').disabled = false;
+    el('p-delete').textContent = 'Löschen';
+    panelC.classList.add('hidden');
+    panelE.classList.remove('hidden');
+    el('status-left').textContent = 'Bereit';
+    el('status-play').textContent = 'Keine Instanz ausgewählt';
+    el('status-total').textContent = '';
+    return;
+  }
+
+  if (count > 1) {
+    currentDetailId = null;
+    setSingleSelectionActionsDisabled(true);
+    el('p-delete').disabled = false;
+    el('p-delete').textContent = `${count} Instanzen löschen`;
+    panelE.classList.add('hidden');
+    panelC.classList.remove('hidden');
+    el('p-icon').innerHTML = iconOf('chest', 60);
+    el('p-name').textContent = `${count} Instanzen ausgewählt`;
+    el('p-groupline').textContent = 'Mehrfachauswahl aktiv';
+    el('status-left').textContent = `${count} Instanzen ausgewählt`;
+    el('status-play').textContent = 'Strg+Klick wählt weitere Instanzen aus oder ab';
+    el('status-total').textContent = 'Sammellöschen verfügbar';
+    return;
+  }
+
+  const id = selectedIds[0];
+  currentDetailId = id;
+  setSingleSelectionActionsDisabled(false);
+  el('p-delete').disabled = false;
+  el('p-delete').textContent = 'Löschen';
+  window.api.saveSettings({ lastSelectedId: id || '' });
+
+  const inst = id ? await window.api.getInstance(id) : null;
+  if (!inst) {
+    selectedInstanceIds.delete(id);
+    panelC.classList.add('hidden');
+    panelE.classList.remove('hidden');
+    el('status-left').textContent = 'Bereit';
+    el('status-play').textContent = 'Keine Instanz ausgewählt';
+    el('status-total').textContent = '';
+    return;
+  }
+
+  panelE.classList.add('hidden');
+  panelC.classList.remove('hidden');
+
+  const iconData = inst.customImage ? await window.api.instanceIcon(id) : null;
+  if (iconData) el('p-icon').innerHTML = `<img src="${iconData}" alt="" />`;
+  else { el('p-icon').innerHTML = iconOf(inst.icon, 60); }
+  el('p-name').textContent = inst.name;
+  el('p-groupline').textContent = inst.group ? `Gruppe: ${inst.group}` : 'Ohne Gruppe';
+
+  const loaderTxt = inst.minecraft.loader && inst.minecraft.loader !== 'vanilla'
+    ? ' · ' + (LOADER_LABEL[inst.minecraft.loader] || inst.minecraft.loader) : '';
+  el('status-left').textContent = inst.name + '  (' + (inst.minecraft.version || 'ohne Version') + loaderTxt + ')';
+  el('status-play').textContent = 'Zuletzt gespielt: ' + (inst.lastPlayed ? fmtDate(inst.lastPlayed) : 'nie');
+  el('status-total').textContent = 'Spielzeit: ' + fmtDuration(inst.totalPlaySeconds);
+}
+
+async function applySelection(ids) {
+  const valid = new Set(instances.map((inst) => inst.id));
+  selectedInstanceIds = new Set((ids || []).filter((id) => valid.has(id)));
+  await refreshSelectionPanel();
+}
+
+async function toggleInstanceSelection(id) {
+  const next = new Set(selectedInstanceIds);
+  if (next.has(id)) next.delete(id);
+  else next.add(id);
+  await applySelection([...next]);
+}
+
 function buildCard(inst) {
   const card = document.createElement('div');
-  card.className = 'card' + (inst.id === currentDetailId ? ' sel' : '');
+  card.className = 'card' + (selectedInstanceIds.has(inst.id) ? ' sel' : '');
   card.dataset.id = inst.id;
 
   const iconHtml = inst.iconData
@@ -974,14 +1303,17 @@ function buildCard(inst) {
     <div class="card-name">${escapeHtml(inst.name)}</div>`;
 
   // einfacher Klick = auswählen (MultiMC), Doppelklick = starten
-  card.addEventListener('click', () => selectInstance(inst.id));
+  card.addEventListener('click', (e) => {
+    if (e.ctrlKey || e.metaKey) toggleInstanceSelection(inst.id);
+    else selectInstance(inst.id);
+  });
   card.addEventListener('dblclick', () => launch(inst.id));
 
   // Rechtsklick: Instanz auswählen und Kontextmenü öffnen
-  card.addEventListener('contextmenu', (e) => {
+  card.addEventListener('contextmenu', async (e) => {
     e.preventDefault();
+    if (!selectedInstanceIds.has(inst.id)) await selectInstance(inst.id);
     openContextMenu(e.clientX, e.clientY);   // sofort anzeigen
-    selectInstance(inst.id);                 // Auswahl folgt
   });
 
   // Drag & Drop in Gruppen
@@ -1060,7 +1392,10 @@ function fillGroupDatalist() {
 
 async function reload() {
   instances = await window.api.listInstances();
+  const valid = new Set(instances.map((inst) => inst.id));
+  selectedInstanceIds = new Set([...selectedInstanceIds].filter((id) => valid.has(id)));
   render();
+  await refreshSelectionPanel();
 }
 
 // ---------- Minecraft-Versionen ----------
@@ -1299,35 +1634,7 @@ async function saveInstance() {
 
 // ---------- Auswahl + rechte Aktionsleiste (MultiMC-Stil) ----------
 async function selectInstance(id) {
-  currentDetailId = id;
-  document.querySelectorAll('.card').forEach((c) => c.classList.toggle('sel', c.dataset.id === id));
-  // Auswahl merken, damit sie beim nächsten Start wiederhergestellt wird
-  window.api.saveSettings({ lastSelectedId: id || '' });
-
-  const inst = id ? await window.api.getInstance(id) : null;
-  const panelC = el('p-content');
-  const panelE = el('p-empty');
-  if (!inst) {
-    panelC.classList.add('hidden');
-    panelE.classList.remove('hidden');
-    el('status-left').textContent = 'Bereit';
-    el('status-play').textContent = 'Keine Instanz ausgewählt';
-    el('status-total').textContent = '';
-    return;
-  }
-  panelE.classList.add('hidden');
-  panelC.classList.remove('hidden');
-
-  const iconData = inst.customImage ? await window.api.instanceIcon(id) : null;
-  if (iconData) el('p-icon').innerHTML = `<img src="${iconData}" alt="" />`;
-  else { el('p-icon').innerHTML = iconOf(inst.icon, 60); }
-  el('p-name').textContent = inst.name;
-
-  const loaderTxt = inst.minecraft.loader && inst.minecraft.loader !== 'vanilla'
-    ? ' · ' + (LOADER_LABEL[inst.minecraft.loader] || inst.minecraft.loader) : '';
-  el('status-left').textContent = inst.name + '  (' + (inst.minecraft.version || 'ohne Version') + loaderTxt + ')';
-  el('status-play').textContent = 'Zuletzt gespielt: ' + (inst.lastPlayed ? fmtDate(inst.lastPlayed) : 'nie');
-  el('status-total').textContent = 'Spielzeit: ' + fmtDuration(inst.totalPlaySeconds);
+  await applySelection(id ? [id] : []);
 }
 
 let launching = false;
@@ -1703,6 +2010,14 @@ async function openSettings() {
   el('s-proxy-port').value = s.proxyPort || '';
   el('s-proxy-user').value = s.proxyUser || '';
   el('s-proxy-pass').value = s.proxyPass || '';
+  el('s-backup-status').className = 'hint';
+  el('s-backup-status').textContent = 'Noch kein Backup erstellt.';
+  el('s-backup-global').disabled = false;
+  el('s-restore-status').className = 'hint';
+  el('s-restore-status').textContent = 'Noch kein Backup wiederhergestellt.';
+  await refreshGlobalBackupOptions();
+  resetBackupProgressUi();
+  setBackupButtonsBusy(false);
   el('s-instances-dir').value = await window.api.getInstancesDir();
   el('s-java').value = s.javaPath || '';
   el('s-min-mem').value = s.defaultMinMemMb;
@@ -1809,6 +2124,257 @@ async function saveSettings() {
   await reload();
 }
 
+function resetBackupProgressUi() {
+  ['backup', 'restore'].forEach((kind) => {
+    clearBackupProgressTimer(kind);
+    backupProgressUiState[kind].shownPercent = 0;
+    backupProgressUiState[kind].targetPercent = 0;
+    backupProgressUiState[kind].detail = '';
+    backupProgressUiState[kind].packing = false;
+    el(`s-${kind}-progress`).dataset.percent = '0';
+    el(`s-${kind}-progress`).dataset.complete = '0';
+    el(`s-${kind}-progress`).classList.add('hidden');
+    el(`s-${kind}-progress-fill`).style.width = '0%';
+    el(`s-${kind}-progress-fill`).classList.remove('backup-progress-fill-busy');
+    el(`s-${kind}-progress-text`).textContent = '0 %';
+  });
+}
+
+const backupProgressActive = { backup: false, restore: false };
+const backupProgressUiState = {
+  backup: { timer: null, shownPercent: 0, targetPercent: 0, detail: '', packing: false },
+  restore: { timer: null, shownPercent: 0, targetPercent: 0, detail: '', packing: false },
+};
+
+function clearBackupProgressTimer(prefix) {
+  const state = backupProgressUiState[prefix];
+  if (!state.timer) return;
+  clearInterval(state.timer);
+  state.timer = null;
+}
+
+function renderBackupProgress(prefix) {
+  const state = backupProgressUiState[prefix];
+  const box = el(`s-${prefix}-progress`);
+  const fill = el(`s-${prefix}-progress-fill`);
+  const text = el(`s-${prefix}-progress-text`);
+  const displayPercent = state.targetPercent >= 100 ? 100 : Math.floor(state.shownPercent);
+
+  box.dataset.percent = String(displayPercent);
+  box.dataset.complete = state.targetPercent >= 100 && state.shownPercent >= 100 ? '1' : '0';
+  box.classList.remove('hidden');
+  fill.classList.toggle('backup-progress-fill-busy', state.packing && state.targetPercent < 99);
+  fill.style.width = `${Math.max(0, Math.min(100, state.shownPercent))}%`;
+  text.textContent = `${displayPercent} %${state.detail ? ' · ' + state.detail : ''}`;
+}
+
+function ensureBackupProgressTimer(prefix) {
+  const state = backupProgressUiState[prefix];
+  if (state.timer) return;
+
+  state.timer = setInterval(() => {
+    const gap = state.targetPercent - state.shownPercent;
+
+    if (gap > 0.05) {
+      const step = state.packing ? Math.max(0.18, gap * 0.18) : Math.max(0.8, gap * 0.4);
+      state.shownPercent = Math.min(state.targetPercent, state.shownPercent + step);
+    } else {
+      state.shownPercent = state.targetPercent;
+    }
+
+    renderBackupProgress(prefix);
+
+    if (state.targetPercent >= 100 && state.shownPercent >= 100) clearBackupProgressTimer(prefix);
+  }, 120);
+}
+
+function setBackupProgressActive(mode, active) {
+  const prefix = mode === 'restore' ? 'restore' : 'backup';
+  backupProgressActive[prefix] = !!active;
+}
+
+function applyBackupProgressEvent(mode, percent, detail) {
+  const prefix = mode === 'restore' ? 'restore' : 'backup';
+  if (!backupProgressActive[prefix]) return;
+  updateBackupProgressUi(mode, percent, detail);
+}
+
+function setBackupButtonsBusy(busy) {
+  const restoreSelect = el('s-restore-backup');
+  const hasPlaceholderOnly = restoreSelect.options.length === 1 && !restoreSelect.options[0].value;
+  const canRestore = restoreSelect.options.length > 0 && !hasPlaceholderOnly && !!restoreSelect.value;
+
+  el('s-backup-global').disabled = busy;
+  restoreSelect.disabled = busy || !canRestore;
+  el('s-restore-global').disabled = busy || !canRestore;
+}
+
+function formatBackupSize(bytes) {
+  const value = Number(bytes) || 0;
+  if (value < 1024 * 1024) return `${Math.max(1, Math.round(value / 1024))} KB`;
+  return `${(value / (1024 * 1024)).toFixed(1)} MB`;
+}
+
+function formatBackupModified(isoString) {
+  try {
+    return new Date(isoString).toLocaleString('de-DE');
+  } catch {
+    return isoString || '';
+  }
+}
+
+async function refreshGlobalBackupOptions(selectedPath) {
+  const select = el('s-restore-backup');
+  const backups = await window.api.listGlobalBackups();
+
+  select.innerHTML = '';
+  if (!backups.length) {
+    const option = document.createElement('option');
+    option.value = '';
+    option.textContent = 'Keine Backups gefunden';
+    select.appendChild(option);
+    select.disabled = true;
+    el('s-restore-global').disabled = true;
+    return [];
+  }
+
+  backups.forEach((backup) => {
+    const option = document.createElement('option');
+    option.value = backup.path;
+    option.textContent = `${backup.name} · ${formatBackupModified(backup.modifiedAt)} · ${formatBackupSize(backup.size)}`;
+    select.appendChild(option);
+  });
+
+  select.value = backups.some((backup) => backup.path === selectedPath) ? selectedPath : backups[0].path;
+  select.disabled = false;
+  el('s-restore-global').disabled = !select.value;
+  return backups;
+}
+
+function updateBackupProgressUi(mode, percent, detail) {
+  const prefix = mode === 'restore' ? 'restore' : 'backup';
+  const state = backupProgressUiState[prefix];
+  const nextPercent = Math.max(0, Math.min(100, Number(percent) || 0));
+  const completed = state.targetPercent >= 100;
+
+  if (nextPercent === 0) {
+    state.shownPercent = 0;
+    state.targetPercent = 0;
+    state.detail = detail || '';
+    state.packing = false;
+    renderBackupProgress(prefix);
+    return;
+  }
+
+  if ((completed && nextPercent < 100) || nextPercent < state.targetPercent) {
+    return;
+  }
+
+  state.targetPercent = nextPercent;
+  state.detail = detail || '';
+  state.packing = /^Packe ZIP-Archiv/.test(state.detail) && nextPercent < 99;
+
+  if (nextPercent >= 99 || (nextPercent - state.shownPercent) >= 20 || state.shownPercent === 0) {
+    state.shownPercent = nextPercent;
+  }
+
+  renderBackupProgress(prefix);
+  if (state.shownPercent < state.targetPercent) ensureBackupProgressTimer(prefix);
+  else if (state.targetPercent >= 100) clearBackupProgressTimer(prefix);
+}
+
+async function runGlobalBackup() {
+  const statusLine = el('s-backup-status');
+  setBackupButtonsBusy(true);
+  setBackupProgressActive('create', true);
+  statusLine.className = 'hint';
+  updateBackupProgressUi('create', 0, 'Bereite Zielordner vor');
+  statusLine.textContent = 'Erstelle Backup in Dokumente/AeroMC Launcher/Backups ...';
+  try {
+    const res = await window.api.createGlobalBackup();
+    if (res.canceled) {
+      statusLine.className = 'hint';
+      statusLine.textContent = 'Backup abgebrochen.';
+      resetBackupProgressUi();
+      setBackupProgressActive('create', false);
+      return;
+    }
+    if (res.ok) {
+      updateBackupProgressUi('create', 100, 'Backup abgeschlossen');
+      setBackupProgressActive('create', false);
+      statusLine.className = 'hint status-ok';
+      statusLine.textContent = 'Backup erfolgreich erstellt';
+      await refreshGlobalBackupOptions(res.path);
+      toast('Globales Backup erstellt: ' + res.path);
+      return;
+    }
+    setBackupProgressActive('create', false);
+    statusLine.className = 'hint status-bad';
+    statusLine.textContent = '✖ ' + (res.message || 'Backup fehlgeschlagen.');
+    toast(res.message || 'Backup fehlgeschlagen.', true);
+  } finally {
+    setBackupProgressActive('create', false);
+    setBackupButtonsBusy(false);
+  }
+}
+
+async function runGlobalRestore() {
+  const statusLine = el('s-restore-status');
+  const selectedBackup = el('s-restore-backup').value;
+  if (!selectedBackup) {
+    statusLine.className = 'hint status-bad';
+    statusLine.textContent = 'Bitte ein Backup auswählen.';
+    return;
+  }
+  setBackupButtonsBusy(true);
+  setBackupProgressActive('restore', true);
+  updateBackupProgressUi('restore', 0, 'Warte auf Backup-Datei');
+  statusLine.className = 'hint';
+  statusLine.textContent = 'Stelle Backup wieder her ...';
+  try {
+    const res = await window.api.restoreGlobalBackup(selectedBackup);
+    if (res.canceled) {
+      statusLine.className = 'hint';
+      statusLine.textContent = 'Wiederherstellen abgebrochen.';
+      resetBackupProgressUi();
+      setBackupProgressActive('restore', false);
+      return;
+    }
+    if (!res.ok) {
+      setBackupProgressActive('restore', false);
+      statusLine.className = 'hint status-bad';
+      statusLine.textContent = '✖ ' + (res.message || 'Wiederherstellen fehlgeschlagen.');
+      toast(res.message || 'Wiederherstellen fehlgeschlagen.', true);
+      return;
+    }
+
+    updateBackupProgressUi('restore', 100, 'Wiederherstellen abgeschlossen');
+    setBackupProgressActive('restore', false);
+    statusLine.className = 'hint status-ok';
+    statusLine.textContent = 'Backup erfolgreich wiederhergestellt';
+    const s = await window.api.getSettings();
+    applyTheme(s.theme || 'dark');
+    iso3dEnabled = s.iso3dIcons !== false;
+    await applyBedrockVisibility();
+    await applySkinBackground();
+    hide('modal-settings');
+    await reload();
+    toast('Backup wiederhergestellt: ' + res.path);
+  } finally {
+    setBackupProgressActive('restore', false);
+    setBackupButtonsBusy(false);
+  }
+}
+
+function promptGlobalRestore() {
+  askConfirm(
+    'Backup wiederherstellen',
+    'Das überschreibt alle aktuellen Instanzen mit dem Inhalt des Backups. Fortfahren?',
+    'Wiederherstellen',
+    runGlobalRestore,
+  );
+}
+
 // ---------- Microsoft-Login / Kontoverwaltung ----------
 async function refreshAccountButton() {
   const acc = await window.api.authStatus();
@@ -1960,21 +2526,7 @@ function wire() {
     else toast('Noch keine Instanz vorhanden.', false);
   });
 
-  el('btn-import').addEventListener('click', async () => {
-    const res = await window.api.importInstance();
-    if (res.canceled) return;
-    if (res.ok) { await reload(); toast('Importiert: ' + res.instance.name); }
-    else toast(res.message || 'Import fehlgeschlagen.', true);
-  });
-
-  el('btn-modpack').addEventListener('click', async () => {
-    status('Importiere Modpack …');
-    const res = await window.api.importModpack();
-    status('Bereit'); el('status-right').textContent = '';
-    if (res.canceled) return;
-    if (res.ok) { await reload(); toast(`Modpack importiert: ${res.instance.name} (${res.fileCount} Dateien)`); }
-    else toast(res.message || 'Modpack-Import fehlgeschlagen.', true);
-  });
+  el('btn-import').addEventListener('click', () => { openImportDialog('zip'); });
 
   // Skin-Hintergrund an/aus (wie MultiMCs Katzen-Knopf)
   el('btn-skin').addEventListener('click', async () => {
@@ -2017,8 +2569,39 @@ function wire() {
     if (h.ok) toast('Anmelde-Dienste wieder erreichbar.');
   });
 
-  // MultiMC-Import
-  el('btn-mmc').addEventListener('click', () => { hide('modal-settings'); openMmc(); });
+  // Import
+  document.querySelectorAll('.import-tabs .mtab').forEach((tab) => {
+    tab.addEventListener('click', async () => {
+      setImportKind(tab.dataset.kind);
+      if (tab.dataset.kind === 'mc') await ensureDefaultMcScan();
+    });
+  });
+  el('import-zip-do').addEventListener('click', runZipImport);
+  el('import-modpack-do').addEventListener('click', runModpackImport);
+  el('mc-pick').addEventListener('click', async () => {
+    const p = await window.api.mcPickFolder();
+    if (p) { el('mc-path').value = p; await scanMc(); }
+  });
+  el('mc-scan').addEventListener('click', scanMc);
+  el('mc-path').addEventListener('keydown', (e) => { if (e.key === 'Enter') scanMc(); });
+  el('mc-all').addEventListener('change', (e) => {
+    document.querySelectorAll('#mc-list input[type=checkbox]').forEach((c) => { c.checked = e.target.checked; });
+    updateMcButton();
+  });
+  el('mc-list').addEventListener('change', updateMcButton);
+  el('mc-do').addEventListener('click', runMcImport);
+  el('cf-pick').addEventListener('click', async () => {
+    const p = await window.api.cfPickFolder();
+    if (p) { el('cf-path').value = p; await scanCf(); }
+  });
+  el('cf-scan').addEventListener('click', scanCf);
+  el('cf-path').addEventListener('keydown', (e) => { if (e.key === 'Enter') scanCf(); });
+  el('cf-all').addEventListener('change', (e) => {
+    document.querySelectorAll('#cf-list input[type=checkbox]').forEach((c) => { c.checked = e.target.checked; });
+    updateCfButton();
+  });
+  el('cf-list').addEventListener('change', updateCfButton);
+  el('cf-do').addEventListener('click', runCfImport);
   el('mmc-pick').addEventListener('click', async () => {
     const p = await window.api.mmcPickFolder();
     if (p) { el('mmc-path').value = p; await scanMmc(); }
@@ -2031,8 +2614,17 @@ function wire() {
   });
   el('mmc-list').addEventListener('change', updateMmcButton);
   el('mmc-do').addEventListener('click', runMmcImport);
+  window.api.onMcProgress((p) => {
+    el('mc-progress').textContent = `Übernehme … ${p.current}/${p.total}`;
+    el('mc-progress').classList.remove('hidden');
+  });
+  window.api.onCfProgress((p) => {
+    el('cf-progress').textContent = `Übernehme … ${p.current}/${p.total}`;
+    el('cf-progress').classList.remove('hidden');
+  });
   window.api.onMmcProgress((p) => {
     el('mmc-progress').textContent = `Übernehme … ${p.current}/${p.total}`;
+    el('mmc-progress').classList.remove('hidden');
   });
 
   // Bedrock
@@ -2083,9 +2675,9 @@ function wire() {
   el('p-play').addEventListener('click', () => currentDetailId && launch(currentDetailId));
   el('p-offline').addEventListener('click', () => currentDetailId && launch(currentDetailId));
   el('p-shortcut').addEventListener('click', () => toast('Verknüpfung erstellen folgt in einem Update.', false));
-  el('p-edit').addEventListener('click', async () => { const inst = await window.api.getInstance(currentDetailId); if (inst) openEdit(inst); });
-  el('p-notes').addEventListener('click', async () => { const inst = await window.api.getInstance(currentDetailId); if (inst) openEdit(inst); });
-  el('p-groupline').addEventListener('click', async () => { const inst = await window.api.getInstance(currentDetailId); if (inst) openEdit(inst); });
+  el('p-edit').addEventListener('click', async () => { if (!currentDetailId) return; const inst = await window.api.getInstance(currentDetailId); if (inst) openEdit(inst); });
+  el('p-notes').addEventListener('click', async () => { if (!currentDetailId) return; const inst = await window.api.getInstance(currentDetailId); if (inst) openEdit(inst); });
+  el('p-groupline').addEventListener('click', async () => { if (!currentDetailId) return; const inst = await window.api.getInstance(currentDetailId); if (inst) openEdit(inst); });
   el('p-mods').addEventListener('click', openMods);
   el('p-worlds').addEventListener('click', openContent);
   el('p-screens').addEventListener('click', openScreens);
@@ -2104,16 +2696,36 @@ function wire() {
     await reload(); await selectInstance(copy.id); toast('Kopiert: ' + copy.name);
   });
   el('p-delete').addEventListener('click', async () => {
-    const inst = await window.api.getInstance(currentDetailId);
-    if (!inst) return;
-    askConfirm('Instanz löschen',
-      `„${inst.name}" wird mit allen Dateien unwiderruflich gelöscht. Fortfahren?`,
+    const ids = orderedSelectedInstanceIds();
+    if (!ids.length) return;
+    if (ids.length === 1) {
+      const inst = await window.api.getInstance(ids[0]);
+      if (!inst) return;
+      askConfirm('Instanz löschen',
+        `„${inst.name}" wird mit allen Dateien unwiderruflich gelöscht. Fortfahren?`,
+        'Endgültig löschen',
+        async () => {
+          await window.api.deleteInstance(ids[0]);
+          selectedInstanceIds.clear();
+          await reload();
+          await selectInstance(instances.length ? instances[0].id : null);
+          toast('Gelöscht.');
+        });
+      return;
+    }
+
+    const names = instances.filter((inst) => selectedInstanceIds.has(inst.id)).map((inst) => inst.name);
+    const preview = names.slice(0, 3).map((name) => `„${name}"`).join(', ');
+    const more = names.length > 3 ? ` und ${names.length - 3} weitere` : '';
+    askConfirm('Instanzen löschen',
+      `${ids.length} Instanzen (${preview}${more}) werden mit allen Dateien unwiderruflich gelöscht. Fortfahren?`,
       'Endgültig löschen',
       async () => {
-        await window.api.deleteInstance(currentDetailId);
+        for (const id of ids) await window.api.deleteInstance(id);
+        selectedInstanceIds.clear();
         await reload();
         await selectInstance(instances.length ? instances[0].id : null);
-        toast('Gelöscht.');
+        toast(`${ids.length} Instanzen gelöscht.`);
       });
   });
 
@@ -2161,6 +2773,8 @@ function wire() {
     if (e.target.value) { el('s-java').value = e.target.value; await refreshJavaStatus(e.target.value); }
   });
   el('s-java').addEventListener('change', (e) => refreshJavaStatus(e.target.value.trim()));
+  el('s-backup-global').addEventListener('click', runGlobalBackup);
+  el('s-restore-global').addEventListener('click', promptGlobalRestore);
   el('btn-save-settings').addEventListener('click', saveSettings);
   document.querySelectorAll('.snav').forEach((b) => b.addEventListener('click', () => setSettingsPane(b.dataset.pane)));
   el('s-open-accounts').addEventListener('click', () => { hide('modal-settings'); openLogin(); });
@@ -2228,6 +2842,7 @@ window.addEventListener('DOMContentLoaded', async () => {
   } catch { applyTheme('dark'); }
   await applySkinBackground();
   window.api.onLaunchProgress(onLaunchEvt);
+  window.api.onBackupProgress((p) => applyBackupProgressEvent(p.mode, p.percent || 0, p.detail || ''));
   window.api.onAuthCode(onAuthCode);
   window.api.onAuthRefreshed(async () => { await refreshAccountButton(); await applySkinBackground(); });
   window.api.onAuthHealth(showAuthHealth);
diff --git a/src/store.js b/src/store.js
index 7418141..e024cd7 100644
--- a/src/store.js
+++ b/src/store.js
@@ -125,8 +125,30 @@ function modsIndexFile(id) {
 
 // ---------- installierte Mods (Metadaten je Instanz) ----------
 
+function scanModsDir(id) {
+  const dir = modsDir(id);
+  if (!fs.existsSync(dir)) return [];
+  return fs.readdirSync(dir, { withFileTypes: true })
+    .filter((entry) => entry.isFile() && /\.(jar|zip)$/i.test(entry.name))
+    .sort((a, b) => a.name.localeCompare(b.name))
+    .map((entry) => ({
+      projectId: null,
+      title: entry.name.replace(/\.(jar|zip)$/i, ''),
+      filename: entry.name,
+      versionNumber: 'Importiert',
+    }));
+}
+
 function listMods(id) {
-  return readJson(modsIndexFile(id), []);
+  const indexed = readJson(modsIndexFile(id), []);
+  const merged = new Map();
+  for (const entry of indexed) {
+    if (entry && entry.filename) merged.set(entry.filename, entry);
+  }
+  for (const entry of scanModsDir(id)) {
+    if (!merged.has(entry.filename)) merged.set(entry.filename, entry);
+  }
+  return [...merged.values()];
 }
 
 function addMod(id, entry) {
@@ -230,6 +252,16 @@ function getInstance(id) {
   return readJson(instanceFile(id), null);
 }
 
+function normalizeInstanceName(name) {
+  return String(name || '').trim().toLowerCase();
+}
+
+function findInstanceByName(name) {
+  const needle = normalizeInstanceName(name);
+  if (!needle) return null;
+  return listInstances().find((inst) => normalizeInstanceName(inst.name) === needle) || null;
+}
+
 // Ordnername aus dem Instanznamen ableiten (wie MultiMC), ungültige Zeichen raus
 function slugForName(name) {
   const base = String(name || 'Instanz').trim()
@@ -248,20 +280,43 @@ function uniqueFolderId(name) {
   return id;
 }
 
-function createInstance(data) {
-  const inst = defaultInstance(data && data.name);
-  inst.id = uniqueFolderId(inst.name); // Ordner = Instanzname statt Zufalls-ID
-  if (data) {
-    if (data.icon) inst.icon = data.icon;
-    if (data.minecraft) Object.assign(inst.minecraft, data.minecraft);
-    if (data.notes) inst.notes = data.notes;
-    if (data.group !== undefined) inst.group = data.group;
-  }
+function applyInstanceData(inst, data) {
+  if (!data) return inst;
+  if (data.name) inst.name = data.name;
+  if (data.icon) inst.icon = data.icon;
+  if (data.minecraft) Object.assign(inst.minecraft, data.minecraft);
+  if (data.notes !== undefined) inst.notes = data.notes;
+  if (data.group !== undefined) inst.group = data.group;
+  return inst;
+}
+
+function writeInstance(inst) {
   ensureDir(gameDir(inst.id));
   writeJson(instanceFile(inst.id), inst);
   return inst;
 }
 
+function createInstance(data) {
+  const inst = applyInstanceData(defaultInstance(data && data.name), data);
+  inst.id = uniqueFolderId(inst.name); // Ordner = Instanzname statt Zufalls-ID
+  return writeInstance(inst);
+}
+
+function createOrReplaceImportedInstance(data) {
+  const existing = findInstanceByName(data && data.name);
+  if (!existing) return createInstance(data);
+
+  const inst = applyInstanceData(defaultInstance(data && data.name), data);
+  inst.id = existing.id;
+  inst.created = existing.created || inst.created;
+  inst.lastPlayed = existing.lastPlayed || null;
+  inst.totalPlaySeconds = existing.totalPlaySeconds || 0;
+
+  const p = instancePath(existing.id);
+  if (fs.existsSync(p)) fs.rmSync(p, { recursive: true, force: true });
+  return writeInstance(inst);
+}
+
 function updateInstance(id, patch) {
   const inst = getInstance(id);
   if (!inst) throw new Error('Instanz nicht gefunden: ' + id);
@@ -313,7 +368,9 @@ module.exports = {
   removeMod,
   listInstances,
   getInstance,
+  findInstanceByName,
   createInstance,
+  createOrReplaceImportedInstance,
   updateInstance,
   deleteInstance,
   duplicateInstance,
diff --git a/src/styles.css b/src/styles.css
index 7b7a304..74aeb5c 100644
--- a/src/styles.css
+++ b/src/styles.css
@@ -80,7 +80,6 @@ body{display:grid;grid-template-rows:auto 1fr auto;height:100vh;overflow:hidden}
 /* farbige Toolbar-Icons wie in MultiMC */
 #btn-new svg{color:#3a9c3a}
 #btn-import svg{color:#3d7ab5}
-#btn-modpack svg{color:#8e5bc7}
 #btn-open-dir svg{color:#d8a72f}
 #btn-console svg{color:#5a6470}
 #btn-account svg{color:#3a9c3a}
@@ -112,6 +111,8 @@ body{display:grid;grid-template-rows:auto 1fr auto;height:100vh;overflow:hidden}
 .hr{height:1px;background:var(--border);margin:6px 2px}
 .sbtn{display:block;width:100%;text-align:center;padding:5px 4px;border:1px solid transparent;border-radius:3px;background:none;cursor:pointer;font-family:inherit;font-size:12px;color:var(--text)}
 .sbtn:hover{background:#e2e6ec;border-color:var(--border2)}
+.sbtn:disabled{opacity:.5;cursor:default}
+.sbtn:disabled:hover{background:none;border-color:transparent}
 .sbtn.play{font-weight:600}
 .sbtn.del:hover{color:var(--danger)}
 
@@ -177,6 +178,8 @@ body{display:grid;grid-template-rows:auto 1fr auto;height:100vh;overflow:hidden}
 .field textarea{resize:vertical}
 .field-row{display:flex;gap:12px;flex-wrap:wrap}.field-row .field{flex:1 1 0;min-width:0}
 .field-icon{max-width:210px;min-width:0}
+.backup-select-field{margin-top:14px;margin-bottom:0}
+.backup-select-field select{width:100%}
 .hint{font-size:12px}
 .path-row{display:flex;gap:8px}.path-row input{flex:1}
 .advanced{border:1px solid var(--border);border-radius:3px;padding:12px 14px 2px;margin-top:4px;background:#fbfbfb}
@@ -247,6 +250,10 @@ body{display:grid;grid-template-rows:auto 1fr auto;height:100vh;overflow:hidden}
 .mod-meta{font-size:11px;color:var(--dim);margin-top:2px}
 .mod-action{flex:none}
 
+/* Import */
+.import-pane{min-height:180px}
+.import-copy{margin:0 0 10px;font-size:13px;line-height:1.5}
+
 /* MultiMC-Import */
 .mmc-bar{display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
 .mmc-item{display:flex;gap:10px;align-items:center;padding:7px 8px;border-radius:3px}
@@ -369,10 +376,21 @@ img.account-av{object-fit:cover;image-rendering:auto}
 .upd-old{color:var(--dim)}
 .upd-arrow{color:var(--dim)}
 .upd-newv{font-weight:700;color:var(--accent)}
+.upd-channel{margin:-6px 0 12px;text-align:center}
 .upd-notes{max-height:180px;overflow:auto;background:var(--input,#fff);border:1px solid var(--border);border-radius:3px;padding:10px 12px;font-size:12px;white-space:pre-wrap;margin-bottom:12px}
 .upd-progress{margin:10px 0}
 .upd-bar{height:8px;background:var(--border2);border-radius:4px;overflow:hidden}
 .upd-bar-fill{height:100%;width:0;background:var(--accent);transition:width .2s}
+.backup-progress{margin-top:12px}
+.backup-progress-bar{height:10px;background:var(--border2);border-radius:999px;overflow:hidden}
+.backup-progress-fill{height:100%;width:0;background:linear-gradient(90deg,#3a7bc8,#5aa1e6);transition:width .2s;background-size:220% 100%}
+.backup-progress-fill-busy{animation:backup-progress-shift 1.2s linear infinite}
+.backup-progress-text{margin-top:6px}
+
+@keyframes backup-progress-shift{
+  from{background-position:0 0}
+  to{background-position:220% 0}
+}
 
 /* Kontextmenü (Rechtsklick auf Instanz) */
 .ctx{
diff --git a/src/updater.js b/src/updater.js
index feba518..6934adb 100644
--- a/src/updater.js
+++ b/src/updater.js
@@ -17,6 +17,13 @@ const { spawn } = require('child_process');
 const API = 'https://git.viper.ipv64.net/api/v1/repos/M_Viper/AeroMc-Launcher/releases';
 const UA = 'AeroMC-Launcher';
 
+function detectInstallKind() {
+  const portableExe = String(process.env.PORTABLE_EXECUTABLE_FILE || '').trim();
+  const execName = path.basename(portableExe || process.execPath || '').toLowerCase();
+  if (portableExe || execName.includes('portable')) return 'portable';
+  return 'setup';
+}
+
 // "1.2.3" -> [1,2,3]; führendes "v" und Zusätze wie "-beta" werden ignoriert
 function parseVersion(v) {
   const m = String(v || '').trim().replace(/^v/i, '').match(/^(\d+)(?:\.(\d+))?(?:\.(\d+))?/);
@@ -34,13 +41,21 @@ function compareVersions(a, b) {
   return 0;
 }
 
-// Windows-Installer im Release finden (.exe bevorzugt, sonst .zip)
-function pickAsset(release) {
+function isPortableAsset(name) {
+  return /portable/i.test(name) && /\.exe$/i.test(name);
+}
+
+function isSetupAsset(name) {
+  return /setup/i.test(name) && /\.exe$/i.test(name);
+}
+
+// passendes Windows-Artefakt im Release finden
+function pickAsset(release, installKind) {
   const assets = release.assets || [];
-  return assets.find((a) => /\.exe$/i.test(a.name))
-      || assets.find((a) => /setup.*\.exe$/i.test(a.name))
-      || assets.find((a) => /\.zip$/i.test(a.name))
-      || null;
+  if (installKind === 'portable') {
+    return assets.find((a) => isPortableAsset(a.name)) || null;
+  }
+  return assets.find((a) => isSetupAsset(a.name)) || null;
 }
 
 /*
@@ -48,6 +63,7 @@ function pickAsset(release) {
  * -> { available, currentVersion, latestVersion, notes, asset, url, noReleases }
  */
 async function checkForUpdate(currentVersion) {
+  const installKind = detectInstallKind();
   const res = await fetch(API + '?limit=10', { headers: { 'User-Agent': UA, Accept: 'application/json' } });
   if (!res.ok) throw new Error('Update-Server antwortet mit HTTP ' + res.status);
   const list = await res.json();
@@ -59,14 +75,15 @@ async function checkForUpdate(currentVersion) {
   releases.sort((a, b) => compareVersions(b.tag_name, a.tag_name));
   const latest = releases[0];
   const available = compareVersions(latest.tag_name, currentVersion) > 0;
-  const asset = pickAsset(latest);
+  const asset = pickAsset(latest, installKind);
   return {
     available,
     currentVersion,
     latestVersion: String(latest.tag_name || '').replace(/^v/i, ''),
+    installKind,
     notes: latest.body || '',
     published: latest.published_at || latest.created_at || null,
-    asset: asset ? { name: asset.name, url: asset.browser_download_url, size: asset.size } : null,
+    asset: asset ? { name: asset.name, url: asset.browser_download_url, size: asset.size, kind: installKind } : null,
     url: latest.html_url,
   };
 }
@@ -77,6 +94,10 @@ async function checkForUpdate(currentVersion) {
  */
 async function downloadAndInstall(asset, onProgress) {
   if (!asset || !asset.url) throw new Error('Kein Installer im Release gefunden.');
+  const installKind = detectInstallKind();
+  if (asset.kind && asset.kind !== installKind) {
+    throw new Error('Das angebotene Update passt nicht zur laufenden Paketart.');
+  }
 
   const dir = path.join(os.tmpdir(), 'aeromc-update');
   fs.mkdirSync(dir, { recursive: true });
@@ -112,4 +133,4 @@ function runInstaller(installerPath) {
   return true;
 }
 
-module.exports = { checkForUpdate, downloadAndInstall, runInstaller, compareVersions, parseVersion };
+module.exports = { checkForUpdate, downloadAndInstall, runInstaller, compareVersions, parseVersion, detectInstallKind };