kinda ugly but BLE sw update seems reliable again

src/MeshBluetoothService.cpp

@@ -336,4 +336,16 @@ void destroyMeshBluetoothService()
     delete meshService;
 
     meshFromNumCharacteristic = NULL;
+}
+
+/**
+ * Super skanky FIXME - when we start a software update we force the mesh service to shutdown.
+ * If the sw update fails, the user will have to manually reset the board to get things running again.
+ */
+void stopMeshBluetoothService()
+{
+    if (meshService)
+        meshService->stop();
+
+    meshFromNumCharacteristic = NULL; // don't try to notify anymore
 }