Upgrading Problems:
No.1: Some Huawei mobiles can receive the updating notification message, but the progress bar is always stuck in 0% after opening the upgrading page.
Method: Some versions of the client can only support the internal storage that set by default, if user have modified the default storage for SD card storage, just switch back. Part model of the latest version has been updated, and it can be set in the default storage for regular updates for SD card, we suggest you to upgrade to the latest ROM version.