How to Upgrade BIOS

For 8500TAC, 8500TUC, 8500TUR, and 8500TVX
Unzip the downloaded file by typing the file name (it's self-extracted).
Copy BIOS file to A drive & rename it to amiboot.rom.
Turn off computer.
Turn on computer while pressing Ctrl and Home keys.
Release the keys after 3 seconds.
Wait until you hear beeps
Remove the disk.
Computer will re-boot automatically.
Confirm for the BIOS date on the boot-up screen.