Hi10 pro doesnt start since bios flash

Hello, the other day I sent a message to aftersale@chuwi.com because I had a problem with a microsd and I read in the forum that I should write to them.
They gave me the downloads for android, windows and bios for my serial HQ64G42180108353, but in the first step of the tutorial, when I flashed the bios, I think the tablet brick and now it doesnt start and the red led is not lighting any more.
The after sale service recommended me to send the tablet to a repair shop.
Is there any other way to solve this?

If there is not any other solution, could you give me a litle tutorial like this https://onedrive.live.com/?authkey=%21AGQtFmS7cIuqHfI&cid=FC1F543E3FBD4AAA&id=FC1F543E3FBD4AAA%2114709&parId=root&o=OneUp for my chuwi hi10 pro and the correct bios to try to flash it by myself?
Because the price that the shop gave me to repair the tablet is too hight and dont woth.

PD: this is the link of the downloads I used http://www.mediafire.com/folder/k18k3pwfb8mz8/Hi10_Pro8300