Unlock Tool Unknown Error (-1)


Jackdown

Members
Jan 4, 2016
4
13
Hi all, I expect that this is something that will have to go through Xiaomi but I thought I'd see if anyone had any advice.

I've spent the day failing to upgrade my Mi4c from 5.1.1 to 7.0. In preparation for this I'd requested to unlock my bootloader and received authorisation to do so.

Unfortunately, for whatever reason from my end, upgrading to the last MIUI 8 bricked my Mi4c. I then spent the rest of the afternoon finding out how to reinstall the fastboot rom. This I have done and the phone is back up and running, all be it on the Chinese ROM. I'd now like to reinstall the .eu rom and so I plugged the phone in booted up the MiFlash Unlock tool, logged in, been granted permission and clicked on unlock. However all I get is a fail at 99%

Any ideas or solutions?

Thanks again for the help
unlock.PNG