diff --git a/buzzer_tool/core/connection.py b/buzzer_tool/core/connection.py
index ddc9a8d..b41c4e3 100644
--- a/buzzer_tool/core/connection.py
+++ b/buzzer_tool/core/connection.py
@@ -90,6 +90,13 @@ class BuzzerConnection:
 
         with open(filepath, 'rb') as f:
             while bytes_sent < file_size:
+                
+                # NEU: Prüfe, ob der Controller VORZEITIG abgebrochen hat (z.B. ERR)
+                if self.serial.in_waiting > 0:
+                    line = self.serial.readline().decode('utf-8', errors='ignore').strip()
+                    if line.startswith("ERR"):
+                        raise BuzzerError(f"Controller hat Transfer abgebrochen: {line}")
+
                 chunk = f.read(chunk_size)
                 if not chunk:
                     break
@@ -97,10 +104,8 @@ class BuzzerConnection:
                 self.serial.flush()
                 bytes_sent += len(chunk)
                 
-                # Callback aufrufen, falls vorhanden
                 if progress_callback:
                     progress_callback(len(chunk))
-
         # 3. Warte auf das finale OK (oder ERR bei CRC/Schreib-Fehlern)
         start_time = time.time()
         while (time.time() - start_time) < timeout:
diff --git a/firmware/prj.conf b/firmware/prj.conf
index 650cdc1..0720eba 100644
--- a/firmware/prj.conf
+++ b/firmware/prj.conf
@@ -43,6 +43,4 @@ CONFIG_NRFX_I2S=y
 # --- Random & HW Info (für Audio-File-Auswahl) ---
 CONFIG_HWINFO=y
 CONFIG_ENTROPY_GENERATOR=y
-CONFIG_BOOT_BANNER=n
-CONFIG_NCS_BOOT_BANNER=n
 CONFIG_CRC=y
\ No newline at end of file
diff --git a/firmware/src/main.c b/firmware/src/main.c
index d5cdef7..2ec6248 100644
--- a/firmware/src/main.c
+++ b/firmware/src/main.c
@@ -35,17 +35,7 @@ void print_device_id(void) {
 
 static int print_custom_banner(void)
 {
-
-    printk("\x1b[44m\x1b[2J\x1b[H");
-
-    // Oberer Rahmen
-    printk("\x1b[1;37m┌───────────────────────────────────────────┐\n");
-    printk("│ Edis Buzzer Version: %-20s │\n", APP_VERSION_STRING);
-    printk("├───────────────────────────────────────────┤\n");
-    printk("│      \x1b[22;37mZephyr Version: \x1b[1;37m%-20s │\n", KERNEL_VERSION_STRING);
-    printk("│         \x1b[22;37mNCS Version: \x1b[1;37m%-20s │\n", NCS_VERSION_STRING);
-    printk("└───────────────────────────────────────────┘\x1b[0m\n");
-    
+    printk("*** Edis Buzzer Version: " APP_VERSION_STRING " ***" );
     return 0;
 }
 
diff --git a/firmware/src/protocol.c b/firmware/src/protocol.c
index 1731522..058855d 100644
--- a/firmware/src/protocol.c
+++ b/firmware/src/protocol.c
@@ -141,6 +141,7 @@ int put_binary_file(const char *filename, ssize_t filesize, uint32_t expected_cr
 
         bytes_written += written;
         retry_count = 0;
+        usb_resume_rx();
     }
     uint32_t duration = k_uptime_get_32() - start;
     uint32_t kb_per_s = (filesize * 1000) / (duration * 1024 +1);
diff --git a/firmware/src/usb.c b/firmware/src/usb.c
index 8044086..7380829 100644
--- a/firmware/src/usb.c
+++ b/firmware/src/usb.c
@@ -105,6 +105,7 @@ void usb_flush_rx(void)
     
     // Semaphore zurücksetzen, falls sie gesetzt war
     k_sem_reset(&usb_rx_sem);
+    usb_resume_rx();
 }
 
 static void usb_status_cb(enum usb_dc_status_code cb_status, const uint8_t *param)