diff --git a/code/application/source/sf_app/code/source/app/sf_system.c b/code/application/source/sf_app/code/source/app/sf_system.c
index 459411b27..7925862ea 100755
--- a/code/application/source/sf_app/code/source/app/sf_system.c
+++ b/code/application/source/sf_app/code/source/app/sf_system.c
@@ -669,6 +669,7 @@ SINT32 app_system_param_update(void)
 
 SINT32 app_system_poweroff(SF_POWEROFF_TYPE_E enType )
 {
+    MLOGD("s\n");
    	UIMenuStoreInfo *puiPara = sf_app_ui_para_get();
 
     sf_poweroff_type_set(enType);
@@ -681,9 +682,13 @@ SINT32 app_system_poweroff(SF_POWEROFF_TYPE_E enType )
 	//if((puiPara->DebugMode) || (puiPara->QLogSwitch)){
 	//	sync();
     //}
-    sync();
+    if(SF_MCU_STARTUP_ONKEY != sf_poweron_type_get())
+        sync();
+    //MLOGD("s\n");
+
     sf_mcu_reg_set(SF_MCU_POWEROFF,sf_poweroff_type_get());
-    sync();
+    if(SF_MCU_STARTUP_ONKEY != sf_poweron_type_get())
+        sync();
     /*
 	SF_STORE_ATTR_S storeattrs = {0};
 	SF_STARTUP_TYPE_E startup = SF_MCU_STARTUP_ONKEY;
@@ -973,11 +978,13 @@ SINT32 sf_app_para_check_stop(void)
         return SF_SUCCESS;
     }
   	ParaTskCfg.IsRun = 0;
-    
+    MLOGD("s1\n");
+
     if(TRUE == sf_get_para_check_flag()){
         MLOGI("menu info is changed\n");
         sf_share_mem_customer_down(1);
     }
+    MLOGD("s2\n");
 
     ret = pthread_join(ParaTskCfg.TskId, NULL);
     if(ret != SF_SUCCESS)
@@ -985,6 +992,7 @@ SINT32 sf_app_para_check_stop(void)
         MLOGD("thread stop fail!\n");
 		return ret;
     }
+    MLOGD("e\n");
 	return SF_SUCCESS;
 }
 
@@ -1268,6 +1276,14 @@ void* sf_app_load_ko_thread(void *arg)
 	UsbKoTskCfg.IsRun = 1;
     
     sf_load_ko();
+
+    /*if((SF_MCU_STARTUP_NORMAL != sf_poweron_type_get()) && (0 == sf_get_fw_update()))
+    {
+        #if SF_IQ_TEST != ENABLE
+        sf_4G_usb_init();
+        app_RegisterNet_start();
+        #endif
+    }*/
 	UsbKoTskCfg.IsRun = 0;
 	SLOGI("thread end\n");