diff --git a/code/application/source/sf_app/code/source/app/sf_app.c b/code/application/source/sf_app/code/source/app/sf_app.c
index 6ad5492db..cb2b030b5 100755
--- a/code/application/source/sf_app/code/source/app/sf_app.c
+++ b/code/application/source/sf_app/code/source/app/sf_app.c
@@ -153,25 +153,24 @@ int main(int argc, char *argv[])
     if((!isUsb) && (SF_MCU_STARTUP_NORMAL != startup) /*&& (0 == isUpdate)*/)
     {
         #if SF_IQ_TEST != ENABLE
-        sf_4G_usb_init();
-        app_RegisterNet_start();
+        if((0 == isUpdate))
+        {
+            sf_4G_usb_init();
+            app_RegisterNet_start();
+        }
         #endif
         sf_app_battery_start();
+        sf_sys_status_led_set(SF_LED_SYS_STATE_PIR_NOT_DETECT); 
+        sf_sys_status_led_set(SF_LED_SYS_STATE_NORMAL);
+    }
+    else if(isUsb){
+        sf_sys_status_led_set(SF_LED_SYS_STATE_USB_IN);
     }
 
     //sf_battery_check_init();
 
     //sf_app_data_ready_start();
 
-    
-    if(isUsb){
-        sf_sys_status_led_set(SF_LED_SYS_STATE_USB_IN);
-    }
-    else{
-        sf_sys_status_led_set(SF_LED_SYS_STATE_PIR_NOT_DETECT); 
-        sf_sys_status_led_set(SF_LED_SYS_STATE_NORMAL);
-    }
-
     if((startup == SF_MCU_STARTUP_NORMAL) && (!isUsb))
 	{
         app_auto_poweroff_start();