diff --git a/PayfritBeacon/Provisioners/DXSmartProvisioner.swift b/PayfritBeacon/Provisioners/DXSmartProvisioner.swift
index 25214f2..ff3e66e 100644
--- a/PayfritBeacon/Provisioners/DXSmartProvisioner.swift
+++ b/PayfritBeacon/Provisioners/DXSmartProvisioner.swift
@@ -174,9 +174,12 @@ final class DXSmartProvisioner: NSObject, BeaconProvisioner {
             await diagnosticLog?.log("write", "[\(index + 1)/\(commands.count)] \(name) (\(packet.count) bytes)")
 
             // SaveConfig (last command) causes beacon MCU to reboot — it never sends an ACK.
-            // Fire the BLE write and return immediately; the disconnect is expected.
+            // Use .withoutResponse so CoreBluetooth fires the bytes immediately into the
+            // BLE radio buffer without waiting for a GATT round-trip. With .withResponse,
+            // the beacon reboots before the ACK arrives, and CoreBluetooth may silently
+            // drop the write — leaving the config unsaved and the beacon still flashing.
             if name == "SaveConfig" {
-                peripheral.writeValue(packet, for: writeChar, type: .withResponse)
+                peripheral.writeValue(packet, for: writeChar, type: .withoutResponse)
                 await diagnosticLog?.log("write", "✅ [\(index + 1)/\(commands.count)] SaveConfig sent — beacon will reboot")
                 await diagnosticLog?.log("write", "✅ All commands written successfully")
                 return