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Recently, my ZIVOO smart mango ice box failed to be pushed during the upgrade process. It failed to start and resume normally, as shown below: 
After contacting the factory technical personnel in an emergency, after the online exchange, the factory technician sent me a "Mango Ice Revover Brush tutorial" (see attached). Brush tutorial at a glance, easily solve the problem, eliminating the trouble to send manufacturers to repair. If you have friends who have encountered similar problems, you might as well try. 
Mango Ice Revover Brush tutorial.pdf