Step 1: Download the newest BIOSversion of your AI TOP Motherboards via product page
Example: https://www.gigabyte.com/Motherboard/Z890-AORUS-XTREME-AI-TOP/support
Step 2: unzip the corresponding bios file of your motherboard
Step 3: copy bios file to a usb
Step 4: plug that usb into your motherboard
Step 5: restart PC and press Delete button to access BIOS settings
Step 6: in BIOS settings screen, press F8 and select corresponding bios file, press Enter
Step 7: wait until bios updating is completed.
Step 8: restart PC and start installing AI TOP Utility software

instruction video for updating bios:
https://www.youtube.com/watch?v=hEoArXgXz6k&ab_channel=R4GEVipeRzZ