Before searching for an update, verify if you are already running version 4.6.5 or a later build: Press , type msinfo32 , and hit Enter. Look for BIOS Version/Date in the System Summary.
Once you are in the correct drive (e.g., FS0:\> ), you will need to run the AMI Firmware Update (AFU) utility. The executable name is often AfuEfix64.efi . You must copy both AfuEfix64.efi and your BIOS file ( YOUR_BIOS.ROM ) to the same USB drive. American Megatrends 4.6.5 Bios Update