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 27ffb637a..818ddf18c 100644
--- a/code/application/source/sf_app/code/source/app/sf_app.c
+++ b/code/application/source/sf_app/code/source/app/sf_app.c
@@ -183,7 +183,7 @@ int main(int argc, char *argv[])
     UIMenuStoreInfo *puiPara = sf_app_ui_para_get();
 
     printf("[%s:%d] CamMode:%d\n", __FUNCTION__, __LINE__,puiPara->CamMode);
-    if(!isUsb)
+    if((!isUsb) && (SF_MCU_STARTUP_NORMAL != startup))
     {
         //sf_usb_mux_s(1);
         //sf_load_ko();
diff --git a/code/application/source/sf_app/code/source/app/sf_common.c b/code/application/source/sf_app/code/source/app/sf_common.c
index 439f17bc0..69f8529ac 100644
--- a/code/application/source/sf_app/code/source/app/sf_common.c
+++ b/code/application/source/sf_app/code/source/app/sf_common.c
@@ -717,14 +717,19 @@ static SINT32 sf_app_proccess_cmd_mcu(SF_MESSAGE_BUF_S *pMessageBuf)
 {
 	MLOGD("ID = %#x\n",pMessageBuf->arg1);
     SF_MESSAGE_BUF_S stMessageBuf = {0};
-    
+    SINT16 startup = 0;
+
 	switch(pMessageBuf->arg1)
 	{
 		case SF_MCU_CMD_POWERON:
-            sf_get_power_on_mode();
+            startup = sf_poweron_type_get();
+            if(SF_MCU_STARTUP_NORMAL != startup){
+                sf_get_power_on_mode();
+                stMessageBuf.arg3 = (SINT32)sf_mcu_get_irshtter();
+            }
+
             stMessageBuf.arg1 = SF_MCU_CMD_POWERON;
             stMessageBuf.arg2 = (SINT32)sf_poweron_type_get();
-            stMessageBuf.arg3 = (SINT32)sf_mcu_get_irshtter();
 	        stMessageBuf.cmdId = CMD_MCU;
 	        sf_com_message_send_to_cardv(&stMessageBuf);