How to solve firmware upgrade fail on MAC

Problem:
An error message is "WestBridge " displayed on the screen.



1. Please go to the official website to find the description of the common problem of GC553, and download the recovery tool.
    https://drive.google.com/open?id=14lCpFgHifkrz6qvWLS8PD-xQgkkMlgxn

2. Double click on the " Download the file"


3. Double click on "LiveGamerUltraRecovery_20190415"


4. After that,  The "Finish!" message is shown on the screen.


5. Download the firmware corresponding to the system version on the official website.