Summary
- Format a USB disk to Fat 32
- Download the BIOS file to USB disk
- Extract the file
- Run the BIOS renamer and it will change the name of BIOS file
- Copy the file with changed name to root of USB
- Reboot and enter BIOS
- Enter EZ Flash update, find the USB disk and select the BIOS file
- It will read it and give bitlocker warning and after that you can update
- Once updated it will reboot with new BIOS
- Updated to 812 BIOS on 2023-04-20
References
PRIME Z790-P WIFI｜Motherboards｜ASUS USA
[Motherboard] How to use USB BIOS FlashBackâ„¢? | Official Support | ASUS Global
Fix USB BIOS Flash Not Working | ASUS, ASROCK, GIGABYTE, MSI, etc. - YouTube