diff --git a/.env.development b/.env.development
index 7febb59..8a100bf 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=1.6.515
+NEXT_PUBLIC_APP_VERSION=1.6.516
 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 10f6e26..f355899 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=1.6.515
+NEXT_PUBLIC_APP_VERSION=1.6.516
 NEXT_PUBLIC_CPL_MODE=production
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4a0cf1d..98e6e67 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+## [1.6.516] – 2025-07-02
+
+- fix: Firmware-Update-Button stabilisiert und Flackern entfernt
+
+- useAdminAuth aus KueEinstellung entfernt und einmalig in SettingsModalWrapper ausgelagert
+- isAdminLoggedIn als Prop übergeben, um ständige Aktualisierungen zu vermeiden
+- Button wird jetzt stabil angezeigt ohne console-Logs oder Intervall-Aufrufe
+
+---
 ## [1.6.515] – 2025-07-02
 
 - feat: Firmwareupdate für alle KÜ-Module mit Fortschrittsanzeige und Abschlussmeldung
diff --git a/components/main/kabelueberwachung/kue705FO/modals/KueEinstellung.tsx b/components/main/kabelueberwachung/kue705FO/modals/KueEinstellung.tsx
index 9614604..82d2221 100644
--- a/components/main/kabelueberwachung/kue705FO/modals/KueEinstellung.tsx
+++ b/components/main/kabelueberwachung/kue705FO/modals/KueEinstellung.tsx
@@ -1,12 +1,11 @@
 "use client";
 // components/main/kabelueberwachung/kue705FO/modals/KueEinstellung.tsx
-import { useState, useEffect } from "react";
+import { useState } from "react";
 import { useDispatch, useSelector } from "react-redux";
 import type { RootState } from "../../../../../redux/store";
 import handleSave from "../handlers/handleSave";
 import handleDisplayEinschalten from "../handlers/handleDisplayEinschalten";
 import firmwareUpdate from "../handlers/firmwareUpdate";
-import { useAdminAuth } from "../../../settingsPageComponents/hooks/useAdminAuth";
 import ProgressModal from "@/components/main/settingsPageComponents/modals/ProgressModal";
 import { toast } from "react-toastify";
 import ConfirmModal from "@/components/common/ConfirmModal";
@@ -33,7 +32,6 @@ const memoryIntervalOptions = [
 
 export default function KueEinstellung({
   slot,
-  showModal,
   isAdminLoggedIn,
   onClose = () => {},
   onModulNameChange,
diff --git a/package-lock.json b/package-lock.json
index b17ebdf..e5ca83f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "cpl-v4",
-  "version": "1.6.515",
+  "version": "1.6.516",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "cpl-v4",
-      "version": "1.6.515",
+      "version": "1.6.516",
       "dependencies": {
         "@fontsource/roboto": "^5.1.0",
         "@iconify-icons/ri": "^1.2.10",
diff --git a/package.json b/package.json
index 86c7e20..e4ae677 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cpl-v4",
-  "version": "1.6.515",
+  "version": "1.6.516",
   "private": true,
   "scripts": {
     "dev": "next dev",