If you want to update your BIOS, please execute the BAT file. Don't use awdflash/AFUDOS directly.
When you execute the BAT file, it will automatic run the flash utility to update the new BIOS for your mainboard.(Note: Before update BIOS please make sure already disabled Flash Part Protect function in BIOS Setup)
The new BIOS was modified for the following reason:
    1.Update PXE ROM to 2.28,support RTL8111D.(AMI)
    2.Fix system hung at postcode 0xAC.(AMI)
