diff --git a/code/application/source/sf_app/code/source/app/sf_device.c b/code/application/source/sf_app/code/source/app/sf_device.c
index 9bde3eeb3..f9d2218d0 100755
--- a/code/application/source/sf_app/code/source/app/sf_device.c
+++ b/code/application/source/sf_app/code/source/app/sf_device.c
@@ -640,6 +640,7 @@ BOOL sf_load_ko(void)
             }
 		}
 	}
+    system("mdev -s");
     //MLOGI("sf_load_ko finsihed.\n");
 	//printf("[%s:%d] e\n", __FUNCTION__, __LINE__);
 	return ret2;