rydyk wrote:

Hello
Yesterday during an update, by accident, my equipment, BV9800pro, performed a complete formatting, "Full Format + Dowload", it seems that Nvram has also been rewritten. it is possible to provide us with a solution or file with this data, specific to our equipment.
we have the sticker on the box and the model.

I think you'd better contact our professional after-sales directly.
After-sales email: support02@blackview.hk