diff --git a/PayfritBeacon/Provisioners/DXSmartProvisioner.swift b/PayfritBeacon/Provisioners/DXSmartProvisioner.swift
index b6aa21b..02a5d95 100644
--- a/PayfritBeacon/Provisioners/DXSmartProvisioner.swift
+++ b/PayfritBeacon/Provisioners/DXSmartProvisioner.swift
@@ -448,10 +448,18 @@ extension DXSmartProvisioner: CBPeripheralDelegate {
             return
         }
 
-        // Handle write errors for command writes
-        if let error, let cont = responseContinuation {
+        // For command writes (FFE1/FFE2): the .withResponse write confirmation
+        // IS the ACK. Some commands (e.g. 0x61 Frame1_DevInfo) don't send a
+        // separate FFE1 notification, so we must resolve here on success too.
+        // If a notification also arrives later, responseContinuation will already
+        // be nil — harmless.
+        if let cont = responseContinuation {
             responseContinuation = nil
-            cont.resume(throwing: error)
+            if let error {
+                cont.resume(throwing: error)
+            } else {
+                cont.resume(returning: Data())
+            }
         }
     }
 }