Copy the Bios Flash utility and the bios bin file to a floppy. Note the name of the bin file. Restart to DOS, if using ME boot for the start disk to DOS.
Change drives and directories until you are in the same dir as awdflash and your *.bin file, at the command prompt type in awdflash and it then follow the instructions. It will ask you if you want to create a back up and will also ask you the name of the *.bin file.
When the bios has been flashed it will tell you to hit F1 or another key to restart, sometimes those keys dont work so just restart manually.
Whenever I have flashed the bios on my Abits boards the only setting that sometimes alters is the CPU frequency in the SoftMenu, so just check that after you have finished.