could you please tell us your Aliexpress order number? This information is very important for us to provide you best solution in the future.
Regarding your issue, you can refer the below video to do the factory settings restore to check.
If this does not help, please show us your current system version, we can send you the factory firmware, then you can try to install it to solve the problem.
RegardsStatistics: Posted by Jammy — Mon Jul 25, 2016 9:52 am
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