I wanted to add this to a thread that was closed. A bit out of date, but important nonetheless. FYI.
Here is that reference:
http://vip.asus.com/forum/view.aspx?id=20070215223109668&board_id=1
EZ Flash 2 – the best, the safest and the most convenient way to update BIOS.
Revised July 31, 2011 - Description for update through ASUS BUPDATER.
Updating BIOS is serious business!
Every precaution should therefore be taken to prevent that anything goes wrong. Avoid ASUS UPDATE!
There are a couple a DOS alternatives, AFUDOS and BUPDATER (newer motherboards), that also are good and safe to use.
Here is that reference:
http://vip.asus.com/forum/view.aspx?id=20070215223109668&board_id=1