You first need to get a long trench coat and then... oops wrong kind of flash 😱
D/L the awdflash.exe utility from EPoX and copy it to a bootable floppy along with the 8khi2108.bin file. Reboot with the floppy and type AWDFLASH 8khi2108.bin /SN /PY /CP /CD /CC /R /LD or just paste this line into the Autoexec.bat file. Upon the first boot, go into setup and load Optimal Default Settings. Then save and exit. If you encounter any problems at this point then power down, remove the power cord and set the "clear CMOS" jumper for a second or two.
PS: You can skip BIOS version updates as the current one will have all previous fixes in it.