diff --git a/data/firmware.bin b/data/firmware.bin
index ef1153b..1d9b269 100644
Binary files a/data/firmware.bin and b/data/firmware.bin differ
diff --git a/data/settings.html b/data/settings.html
index a9547ab..029fbd4 100644
--- a/data/settings.html
+++ b/data/settings.html
@@ -208,6 +208,13 @@
             >
               🔄 Update durchführen
             </button>
+            <button
+              id="mqttPublishBtn"
+              onclick="updateButtons()"
+              class="btn btn-warning"
+            >
+              📡 Buttons Updaten
+            </button>
           </div>
         </div>
 
@@ -560,6 +567,23 @@
         }
       }
 
+      // MQTT Message publish function
+      function updateButtons() {
+  if (confirm("Update Buttons?")) {
+    fetch("/api/updateButtons", {
+      method: "GET"
+    })
+      .then((response) => {
+        if (response.status === 200) {
+          showMessage("Buttons führen das Update erfolgreich aus!", "success");
+        } else {
+          showMessage("Fehler beim Senden der MQTT Message", "error");
+        }
+      })
+      .catch((error) => showMessage("Verbindungsfehler beim MQTT Publish", "error"));
+  }
+}
+
       function updateWifiButtonAccess(licenseLevel) {
     const wifiSubmitBtn = document.getElementById("wifiSubmitBtn");
     const wifiForm = document.getElementById("wifiForm");
diff --git a/src/communication.h b/src/communication.h
index 1ce6180..aea9d36 100644
--- a/src/communication.h
+++ b/src/communication.h
@@ -225,7 +225,7 @@ void setupMqttServer() {
         }  
         else if (strncmp(topic, "heartbeat/alive/", 16) == 0) {
         handleHeartbeatTopic(topic, payload);
-}
+        }
         updateStatusLED(3);
     });
    
diff --git a/src/webserverrouter.h b/src/webserverrouter.h
index 57f37e1..a586f1d 100644
--- a/src/webserverrouter.h
+++ b/src/webserverrouter.h
@@ -1,5 +1,8 @@
 #pragma once
 #include <Arduino.h>
+
+void sendMQTTMessage(const char * topic, const char * message);
+
 #include "master.h"
 #include <ESPAsyncWebServer.h>
 #include <AsyncWebSocket.h>
@@ -7,9 +10,9 @@
 #include <SPIFFS.h>
 #include <esp_wifi.h>
 
-
 #include <buttonassigh.h>
 #include <wificlass.h>
+#include "communication.h"
 
 AsyncWebServer server(80);
 AsyncWebSocket ws("/ws");
@@ -32,13 +35,13 @@ void setupRoutes(){
         request->send(SPIFFS, "/rfid.html", "text/html");
     });
 
-  server.on("/button.bin", HTTP_GET, [](AsyncWebServerRequest *request) {
-    if (SPIFFS.exists("/button.bin")) {
-        request->send(SPIFFS, "/button.bin", "application/octet-stream");
-        Serial.println("Firmware file served: /button.bin");
+  server.on("/firmware.bin", HTTP_GET, [](AsyncWebServerRequest *request) {
+    if (SPIFFS.exists("/firmware.bin")) {
+        request->send(SPIFFS, "/firmware.bin", "application/octet-stream");
+        Serial.println("Firmware file served: /firmware.bin");
     } else {
         request->send(404, "application/json", "{\"error\":\"File not found\"}");
-        Serial.println("Firmware file not found: /button.bin");
+        Serial.println("Firmware file not found: /firmware.bin");
     }
 });
   
@@ -253,6 +256,16 @@ server.on("/api/set-location", HTTP_POST, [](AsyncWebServerRequest *request) {
     request->send(200, "application/json", result);
   });
 
+  
+server.on("/api/updateButtons", HTTP_GET, [](AsyncWebServerRequest *request){
+    Serial.println("/api/updateButtons called");
+
+    // MQTT publish on aquacross/update/flag with raw payload "1"
+    sendMQTTMessage("aquacross/update/flag", "1");
+    Serial.println("MQTT published: aquacross/update/flag -> 1");
+    request->send(200, "application/json", "{\"success\":true}");
+});
+
 
 // Statische Dateien
   server.serveStatic("/", SPIFFS, "/");
@@ -280,4 +293,4 @@ void pushUpdateToFrontend(const String &message) {
 
 void loopWebSocket() {
     ws.cleanupClients(); // Clean up disconnected clients
-}
\ No newline at end of file
+}