This BIOS packet is directly from Xiaomi stuff, so it is reliable.

Warning: Since it's a BIOS update, there's possibility that if some errors(such as force quit the update program) occur during the update process, the whole device may fail to boot.

If unfortunately this situation happens on you, you need to find Xiaomi stuff to fix your device. If you use this program, you should agree that you are the person who take whole responsibility, instead of me.

1. Download all the files in this BIOS folder.

2. Extract all the files and copy them to the root directory of a FAT32 U disk.

3. Restart your laptop and press F12 botton to choose U disk to boot.

• IMPORTANT: From this step, your computer should keep in charged by AC adapter until the whole update process finishes.

4. In the new shell interface, type unlockme.nsh and press Enter, then the system will automatically restart.

5. Repeat the third step, and this time type flash.nsh.

6. Wait until the update process ends.

Thanks for Xiaomi Official for providing BIOS packet.