(Note: BIOS file and boot files should fit on a floppy disk. "afudos /ip4c800b.rom" is the command that will install it. Your monitor will display the update's progress with a series of messages: "Reading file," then "Erasing flash," then "Writing flash." The "writing flash" message will be followed with a percentage counter that tells you how far the write has proceeded.If the BIOS file is too large to fit with boot files, consider using the EZ Flash method described below.)Insert the motherboard support CD into optical drive. The final message will be "Verifying flash." DO NOT switch off or reboot at any point in this process or you will ruin your motherboard.After the update is complete, the utility will return to the DOS prompt. Enter the BIOS Menu and load "Setup Default."Save and reboot. Copy your new BIOS files to a floppy disk or USB drive. When the system is at POST, press "Alt" "F2" to enter EZ-Flash.Alternatively, on late model motherboards you may press "Delete" to enter BIOS setup, then access EZ-Flash from the "Tools" option on the navigation bar. Do not switch off or reboot or you will ruin your motherboard.
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In most cases, nothing will go wrong at all, but it's important to know that there's an associated risk and not to treat the process too lightly.
It's good to have a spare copy of all important files from your PC before you start.
Why the fear of updating a motherboard bios is still perpetuated today is strange.
No need to upgrade if you do not have said problems however. I have seen a regression in performance upgrading to later BIOS's for example and have dropped back a step on a few occasions.