diff --git a/code/application/source/cardv/SrcCode/UIWnd/LVGL_SPORTCAM/UIFlowLVGL/UIFlowMenuCommonItem/UIFlowMenuCommonItemEventCallback.c b/code/application/source/cardv/SrcCode/UIWnd/LVGL_SPORTCAM/UIFlowLVGL/UIFlowMenuCommonItem/UIFlowMenuCommonItemEventCallback.c
index 021acc7a9..e0713de50 100755
--- a/code/application/source/cardv/SrcCode/UIWnd/LVGL_SPORTCAM/UIFlowLVGL/UIFlowMenuCommonItem/UIFlowMenuCommonItemEventCallback.c
+++ b/code/application/source/cardv/SrcCode/UIWnd/LVGL_SPORTCAM/UIFlowLVGL/UIFlowMenuCommonItem/UIFlowMenuCommonItemEventCallback.c
@@ -91,6 +91,7 @@ static BOOL sf_is_4g_module_usb_update_file_exist(UINT8 *updateFname)
             }
         }
     }
+	printf("[%s:%d]no update file in emmc \n", __FUNCTION__, __LINE__);
 	
 	dirp=opendir((char *)"/mnt/sd/");
 	if (dirp != NULL)
@@ -118,7 +119,7 @@ static BOOL sf_is_4g_module_usb_update_file_exist(UINT8 *updateFname)
     
     closedir(dirp);
 	//free(strg_path);
-	printf("[%s:%d]no update file\n", __FUNCTION__, __LINE__);
+	printf("[%s:%d]no update file in sd card \n", __FUNCTION__, __LINE__);
 	return FALSE;
 }
 
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 7c81ebd72..3d5737b7d 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
@@ -1237,23 +1237,25 @@ UINT32 sf_4g_update(UINT8 *upFname)
     if(strncmp(puiPara->ModuleVer, GPRS_MODULE_TYPE_EG915Q, 6) == 0){
         sprintf(cmdStr, "/usr/bin/DownloadCLI-EG915Q  -p /dev/ttyACM0 -c %s/cfg_ec618_usb.ini -B \"BL AP CP\" -r", upFname);
         sprintf(cmdtmp, "/dev/ttyACM0");
+		for (UINT8 i = 0; i < 40; i++) {
+			if (access(cmdtmp, F_OK) == SF_SUCCESS) {
+				ret = SF_SUCCESS;
+				printf("[%s:%d] %s exist!\r\n", __FUNCTION__, __LINE__,cmdtmp);
+				break;
+			}
+			else {
+				//usleep(100 * 1000);
+				sf_sleep_ms(500);
+			}
+    	}
     }else {
         sprintf(cmdStr, "/usr/bin/QFirehose-EG91 -f %s",upFname);
         sprintf(cmdtmp, "/dev/ttyUSB0");
+		printf("[%s:%d] %s exist!\r\n", __FUNCTION__, __LINE__,cmdtmp);
+		ret = SF_SUCCESS;
     }
     printf("[%s:%d] cmd:%s\n", __FUNCTION__, __LINE__,cmdStr);
-    for (UINT8 i = 0; i < 40; i++) {
-        if (access(cmdtmp, F_OK) == SF_SUCCESS) {
-            ret = SF_SUCCESS;
-            printf("[%s:%d] %s exist!\r\n", __FUNCTION__, __LINE__,cmdtmp);
-            break;
-        }
-        else {
-            //usleep(100 * 1000);
-            sf_sleep_ms(500);
-        }
-    }
-
+	
     if (ret == SF_SUCCESS) {
         ret = system(cmdStr);
         if (sf_poweron_type_get() == SF_MCU_STARTUP_RING) {