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Hello
I have a rather complicated problem
Try reinstalling the operating system of my model phone Blackview Zeta
With the OFFICIAL ROM you have on your official website

https://mega.nz/#F!eJpnmbBa!G45WNj_-SponuQ3mzyi3OQ

The problem is that after successfully completing the operation
My phone does not turn on, and I can not enter the menu recovery

What can I do to solve this problem
Fully trust the on of its official website.

Help me please.