1. Get a FAT32 formatted USB drive and copy the EFI folder and BIOS folder to the root directory of the USB drive
2. Connect the USB drive to the machine, power it on and press F11. In the pop-up boot option interface, select UEFI: USB drive to boot into the SHELL interface
3. For input commands without connecting a hard drive, enter FS0: and press Enter; for input commands with a hard drive connected, enter FS1: and press Enter; (Note the colon: do not omit it)
4. Enter "CD BIOS" and press Enter
5. Enter 12U and press Enter to flash the BIOS
6. During the flashing process, do not restart, power off, or shut down the device, otherwise the motherboard may be damaged
After flashing, restart the computer, press the delete key to enter BIOS, press F9 and then F10 to optimize the settings
8. Writing completed