diff --git a/code/application/source/sf_app/code/source/fileMng/sf_file.c b/code/application/source/sf_app/code/source/fileMng/sf_file.c
index 1afd13765..1d8ac5127 100755
--- a/code/application/source/sf_app/code/source/fileMng/sf_file.c
+++ b/code/application/source/sf_app/code/source/fileMng/sf_file.c
@@ -1431,26 +1431,27 @@ BOOL sf_is_4g_module_usb_update_file_exist(UINT8 *updateFname)
 
     UIMenuStoreInfo *puiPara = sf_app_ui_para_get();
 
-	char *strg_path = sf_get_root_path();
-	if(strg_path == NULL)
-	{
-		free(strg_path);
-		return FALSE;
-	}
+	dirp=opendir((char *)"/mnt/sd2/");
 	
-    if ((dirp=opendir((char *)strg_path)) != NULL)
+	if (dirp != NULL)
 	{
+		//printf("[%s:%d] opendir success\n", __FUNCTION__, __LINE__);
         while ((ptr=readdir(dirp)) != NULL)
         {
+			//printf("[%s:%d] readdir success\n", __FUNCTION__, __LINE__);
             if(strcmp(ptr->d_name,".")==0 || strcmp(ptr->d_name,"..")==0)    ///current dir OR parrent dir
                 continue;
             else if(ptr->d_type == 4)    ///dir
             {
-                if(SF_STRNCMP(ptr->d_name, puiPara->ModuleVer, 6) == 0)
+				//printf("[%s:%d] success strg_path:%s\n", __FUNCTION__, __LINE__, strg_path);
+				//printf("ptr->d_name: %s, puiPara->ModuleVer: %s\n", ptr->d_name, puiPara->ModuleVer);
+                if(strncmp(ptr->d_name, puiPara->ModuleVer, 6) == 0)
                 {
-                    SF_SPRINTF(updateFname, "%s%s", strg_path, ptr->d_name);
+					sprintf((char*)updateFname, "%s%s", "/mnt/sd2/", ptr->d_name);
+                    //sprintf((char*)updateFname, "%s%s", strg_path, ptr->d_name);
                     closedir(dirp);
-                    printf("[%s:%d] updateFname:%s\n", __FUNCTION__, __LINE__, updateFname);
+					//free(strg_path);
+                    printf("[%s:%d] success emmc strg_path:%s\n", __FUNCTION__, __LINE__, updateFname);
                     return TRUE;
                 }
             }
@@ -1460,9 +1461,34 @@ BOOL sf_is_4g_module_usb_update_file_exist(UINT8 *updateFname)
             }
         }
     }
+	
+	dirp=opendir((char *)"/mnt/sd/");
+	if (dirp != NULL)
+	{
+		while ((ptr=readdir(dirp)) != NULL)
+		{
+			if(strcmp(ptr->d_name,".")==0 || strcmp(ptr->d_name,"..")==0)    ///current dir OR parrent dir
+				continue;
+			else if(ptr->d_type == 4)    ///dir
+			{
+				if(strncmp(ptr->d_name, puiPara->ModuleVer, 6) == 0)
+				{
+					sprintf((char*)updateFname, "%s%s", "/mnt/sd/", ptr->d_name);
+					closedir(dirp);
+					printf("[%s:%d] success sd card strg_path:%s\n", __FUNCTION__, __LINE__, updateFname);
+					return TRUE;
+				}
+			}
+			else
+			{
+				continue;
+			}
+		}
+	}
+    
     closedir(dirp);
-	free(strg_path);
-	printf("[%s:%d]==no update file\n", __FUNCTION__, __LINE__);
+	//free(strg_path);
+	printf("[%s:%d]no update file\n", __FUNCTION__, __LINE__);
 	return FALSE;
 }
 /*************************************************