diff --git a/PayfritBeacon/BeaconProvisioner.swift b/PayfritBeacon/BeaconProvisioner.swift
index 7215149..5d2dee0 100644
--- a/PayfritBeacon/BeaconProvisioner.swift
+++ b/PayfritBeacon/BeaconProvisioner.swift
@@ -365,8 +365,10 @@ class BeaconProvisioner: NSObject, ObservableObject {
         isTerminating = true
         DebugLog.shared.log("BLE: Provisioning success!")
         state = .success
-        disconnectPeripheral()
+        // Signal completion BEFORE disconnecting — the disconnect delegate fires
+        // synchronously and ScanView needs writesCompleted=true before it sees it
         completion?(.success(macAddress: nil))
+        disconnectPeripheral()
         cleanup()
     }
 
diff --git a/PayfritBeacon/Provisioners/DXSmartProvisioner.swift b/PayfritBeacon/Provisioners/DXSmartProvisioner.swift
index eda53bc..25214f2 100644
--- a/PayfritBeacon/Provisioners/DXSmartProvisioner.swift
+++ b/PayfritBeacon/Provisioners/DXSmartProvisioner.swift
@@ -173,6 +173,15 @@ final class DXSmartProvisioner: NSObject, BeaconProvisioner {
         for (index, (name, packet)) in commands.enumerated() {
             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.
+            if name == "SaveConfig" {
+                peripheral.writeValue(packet, for: writeChar, type: .withResponse)
+                await diagnosticLog?.log("write", "✅ [\(index + 1)/\(commands.count)] SaveConfig sent — beacon will reboot")
+                await diagnosticLog?.log("write", "✅ All commands written successfully")
+                return
+            }
+
             // Retry each command up to 2 times — beacon BLE stack can be flaky
             var lastError: Error?
             for writeAttempt in 1...2 {
@@ -193,8 +202,8 @@ final class DXSmartProvisioner: NSObject, BeaconProvisioner {
                 throw lastError
             }
 
-            // 500ms between commands — beacon needs time to process
-            try await Task.sleep(nanoseconds: 500_000_000)
+            // 150ms between commands — aggressive speedup (was 300ms, originally 500ms)
+            try await Task.sleep(nanoseconds: 150_000_000)
         }
     }
 
diff --git a/PayfritBeacon/Views/ScanView.swift b/PayfritBeacon/Views/ScanView.swift
index 4210268..64d4586 100644
--- a/PayfritBeacon/Views/ScanView.swift
+++ b/PayfritBeacon/Views/ScanView.swift
@@ -698,7 +698,7 @@ struct ScanView: View {
 
             try await provisioner.writeConfig(config)
             writesCompleted = true
-            provisioner.disconnect()
+            // No explicit disconnect needed — succeed() already disconnects
 
             try await APIClient.shared.registerBeaconHardware(
                 businessId: business.id,