diff --git a/.env.development b/.env.development
index 718ab40..e4a1d66 100644
--- a/.env.development
+++ b/.env.development
@@ -6,6 +6,6 @@ NEXT_PUBLIC_USE_MOCK_BACKEND_LOOP_START=false
 NEXT_PUBLIC_EXPORT_STATIC=false
 NEXT_PUBLIC_USE_CGI=false
 # App-Versionsnummer
-NEXT_PUBLIC_APP_VERSION=1.6.525
+NEXT_PUBLIC_APP_VERSION=1.6.526
 NEXT_PUBLIC_CPL_MODE=json   # json (Entwicklungsumgebung) oder jsSimulatedProd (CPL ->CGI-Interface-Simulator) oder production (CPL-> CGI-Interface Platzhalter)
 
diff --git a/.env.production b/.env.production
index aa54173..e587716 100644
--- a/.env.production
+++ b/.env.production
@@ -5,5 +5,5 @@ NEXT_PUBLIC_CPL_API_PATH=/CPL
 NEXT_PUBLIC_EXPORT_STATIC=true
 NEXT_PUBLIC_USE_CGI=true
 # App-Versionsnummer
-NEXT_PUBLIC_APP_VERSION=1.6.525
+NEXT_PUBLIC_APP_VERSION=1.6.526
 NEXT_PUBLIC_CPL_MODE=production
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index aa65015..2fbcdbb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+## [1.6.526] – 2025-07-02
+
+- fix: Firmware-Update läuft nun exakt 5 Minuten bis 100 % Fortschritt
+
+- Fehler behoben, bei dem das Firmware-Update nach wenigen Sekunden vorzeitig beendet wurde
+- Fortschrittsanzeige über Redux-Slice `firmwareProgressSlice` korrekt umgesetzt
+- Thunk `startFirmwareUpdateThunk` korrekt eingebunden und verwendet
+- UI zeigt stabile 5-minütige Progressbar wie erwartet
+
+---
 ## [1.6.525] – 2025-07-02
 
 - fix: Toast-Benachrichtigungen wiederhergestellt durch Einbindung von ToastContainer
diff --git a/components/main/kabelueberwachung/kue705FO/modals/KueEinstellung.tsx b/components/main/kabelueberwachung/kue705FO/modals/KueEinstellung.tsx
index 32c8ea9..5701a59 100644
--- a/components/main/kabelueberwachung/kue705FO/modals/KueEinstellung.tsx
+++ b/components/main/kabelueberwachung/kue705FO/modals/KueEinstellung.tsx
@@ -2,7 +2,7 @@
 // components/main/kabelueberwachung/kue705FO/modals/KueEinstellung.tsx
 import { useState } from "react";
 import { useDispatch, useSelector } from "react-redux";
-import type { RootState } from "../../../../../redux/store";
+import type { RootState, AppDispatch } from "../../../../../redux/store";
 import handleSave from "../handlers/handleSave";
 import handleDisplayEinschalten from "../handlers/handleDisplayEinschalten";
 import firmwareUpdate from "../handlers/firmwareUpdate";
@@ -39,7 +39,7 @@ export default function KueEinstellung({
   onClose = () => {},
   onModulNameChange,
 }: Props) {
-  const dispatch = useDispatch();
+  const dispatch = useDispatch<AppDispatch>();
   const {
     kueID,
     kueName,
diff --git a/package-lock.json b/package-lock.json
index 10747a9..d2752fd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "cpl-v4",
-  "version": "1.6.525",
+  "version": "1.6.526",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "cpl-v4",
-      "version": "1.6.525",
+      "version": "1.6.526",
       "dependencies": {
         "@fontsource/roboto": "^5.1.0",
         "@iconify-icons/ri": "^1.2.10",
diff --git a/package.json b/package.json
index 915c0c9..292b6b7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cpl-v4",
-  "version": "1.6.525",
+  "version": "1.6.526",
   "private": true,
   "scripts": {
     "dev": "next dev",