diff --git a/flutter/lib/main.dart b/flutter/lib/main.dart
index ecf3455..a67548b 100644
--- a/flutter/lib/main.dart
+++ b/flutter/lib/main.dart
@@ -92,6 +92,8 @@ void main() async {
     print('[INIT] Skip Firebase init (Platform == Linux)...');
   }
 
+  await appAuth.tryMigrateFromV1();
+
   print('[INIT] Load Notifications...');
 
   final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
diff --git a/flutter/lib/state/app_auth.dart b/flutter/lib/state/app_auth.dart
index 6a389e8..aed86f0 100644
--- a/flutter/lib/state/app_auth.dart
+++ b/flutter/lib/state/app_auth.dart
@@ -1,5 +1,6 @@
 import 'dart:convert';
 
+import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:flutter/foundation.dart';
 import 'package:simplecloudnotifier/api/api_client.dart';
 import 'package:simplecloudnotifier/api/api_exception.dart';
@@ -69,6 +70,51 @@ class AppAuth extends ChangeNotifier implements TokenSource {
     notifyListeners();
   }
 
+  Future<bool> tryMigrateFromV1() async {
+    try {
+      final sp = Globals().sharedPrefs;
+
+      if (sp.containsKey("auth.userid") || !sp.containsKey("user_id") || !sp.containsKey("user_key")) {
+        return false;
+      }
+
+      final fcmToken = await FirebaseMessaging.instance.getToken();
+
+      if (fcmToken == null) {
+        ApplicationLog.error('Failed to migrate from v1: No FCM Token');
+        return false;
+      }
+
+      // migrate from v1
+
+      final oldUserID = sp.getString('user_id');
+      final oldUserKey = sp.getString('user_key');
+
+      if (oldUserID == null || oldUserKey == null || oldUserID.isEmpty || oldUserKey.isEmpty) {
+        ApplicationLog.error('Failed to migrate from v1: user_id or user_key is null|empty');
+        return false;
+      }
+
+      final newTokenSend = await APIClient.createKeyToken(DirectTokenSource(oldUserID, oldUserKey), "SendKey (auto-migration to SCN v2)", "CS", true);
+
+      final user = await APIClient.getUser(DirectTokenSource(oldUserID, oldUserKey), oldUserID);
+
+      final client = await APIClient.addClient(DirectTokenSource(oldUserID, oldUserKey), fcmToken, Globals().deviceModel, Globals().version, Globals().hostname, Globals().clientType);
+
+      set(user, client, oldUserKey, newTokenSend.token);
+
+      sp.remove('user_id');
+      sp.remove('user_key');
+
+      ApplicationLog.info('Migrated prefs from v1 to v2', additional: 'UserID: ${oldUserID}, ClientID: ${client.clientID}, TokenAdmin: ${oldUserKey}, TokenSend: ${newTokenSend.token}');
+
+      return true;
+    } catch (exc, trace) {
+      ApplicationLog.error('Failed to migrate from v1: ' + exc.toString(), trace: trace);
+      return false;
+    }
+  }
+
   void load() {
     //final cdat = Globals().sharedPrefs.getString('auth.cdate');
     //final mdat = Globals().sharedPrefs.getString('auth.mdate');