diff --git a/.github/workflows/gitea-release.yml b/.github/workflows/gitea-release.yml
index b832a47..679b810 100644
--- a/.github/workflows/gitea-release.yml
+++ b/.github/workflows/gitea-release.yml
@@ -40,10 +40,8 @@ jobs:
         # Copy firmware binary
         cp .pio/build/esp32dev/firmware.bin .pio/build/esp32dev/upgrade_filaman_firmware_v${VERSION}.bin
         
-        # Create SPIFFS binary with minimal ESP32 image header (chip version set to max supported)
-        echo -ne '\xE9\x01\x00\x00\x00\x00\x00\x00\x00\x30\x00\x00\x00\x00\x00\x00' > .pio/build/esp32dev/upgrade_filaman_website_v${VERSION}.bin
-        # Append the actual SPIFFS data
-        cat .pio/build/esp32dev/spiffs.bin >> .pio/build/esp32dev/upgrade_filaman_website_v${VERSION}.bin 2>/dev/null
+        # Create SPIFFS binary (without header)
+        cp .pio/build/esp32dev/spiffs.bin .pio.build/esp32dev/upgrade_filaman_website_v${VERSION}.bin
         
         # Create full binary
         (cd .pio/build/esp32dev && 
diff --git a/.github/workflows/github-release.yml b/.github/workflows/github-release.yml
index 220292b..bd559b0 100644
--- a/.github/workflows/github-release.yml
+++ b/.github/workflows/github-release.yml
@@ -47,10 +47,8 @@ jobs:
         # Copy firmware binary
         cp .pio/build/esp32dev/firmware.bin .pio/build/esp32dev/upgrade_filaman_firmware_v${VERSION}.bin
         
-        # Create SPIFFS binary with minimal ESP32 image header (chip version set to max supported)
-        echo -ne '\xE9\x01\x00\x00\x00\x00\x00\x00\x00\x30\x00\x00\x00\x00\x00\x00' > .pio/build/esp32dev/upgrade_filaman_website_v${VERSION}.bin
-        # Append the actual SPIFFS data
-        cat .pio/build/esp32dev/spiffs.bin >> .pio/build/esp32dev/upgrade_filaman_website_v${VERSION}.bin 2>/dev/null
+        # Create SPIFFS binary (without header)
+        cp .pio/build/esp32dev/spiffs.bin .pio/build/esp32dev/upgrade_filaman_website_v${VERSION}.bin
         
         # Create full binary (always)
         (cd .pio/build/esp32dev && 
diff --git a/src/main.cpp b/src/main.cpp
index d57a839..cf9a766 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -19,6 +19,12 @@
 void setup() {
   Serial.begin(115200);
 
+  uint64_t chipid;
+
+  chipid = ESP.getEfuseMac(); //The chip ID is essentially its MAC address(length: 6 bytes).
+  Serial.printf("ESP32 Chip ID = %04X", (uint16_t)(chipid >> 32)); //print High 2 bytes
+  Serial.printf("%08X\n", (uint32_t)chipid); //print Low 4bytes.
+
   // Initialize SPIFFS
   initializeSPIFFS();
 
diff --git a/src/nfc.cpp b/src/nfc.cpp
index a0910e1..ab94430 100644
--- a/src/nfc.cpp
+++ b/src/nfc.cpp
@@ -431,6 +431,7 @@ void scanRfidTask(void * parameter) {
 }
 
 void startNfc() {
+  Wire.setBufferSize(256);
   nfc.begin();                                           // Beginne Kommunikation mit RFID Leser
   delay(1000);
   unsigned long versiondata = nfc.getFirmwareVersion();  // Lese Versionsnummer der Firmware aus
diff --git a/src/website.cpp b/src/website.cpp
index 2e17798..256e05a 100644
--- a/src/website.cpp
+++ b/src/website.cpp
@@ -403,7 +403,8 @@ void setupWebserver(AsyncWebServer &server) {
                     backupJsonConfigs();
                 }
                 
-                if (!Update.begin(updateSize, command)) {
+                // Setze spezifische Update-Flags für SPIFFS-Updates
+                if (!Update.begin(updateSize, command, command == U_SPIFFS ? true : false, command == U_SPIFFS ? 0 : -1)) {
                     if (command == U_SPIFFS) {
                         // Restore JSON config files if update fails at start
                         restoreJsonConfigs();