Asus P4SGL-MX - Manual (Page 33)

2-4 Chapter 2: BIOS Information
The BIOS information in the above screen is for reference only. What
you see on your screen may not be exactly the same as shown.
Creating a bootable disk
AFLASH.EXE is a Flash Memory Writer utility that updates the BIOS by uploading
a new BIOS file to the programmable flash ROM on the motherboard. This file
works only in DOS mode. To determine the BIOS version of your motherboard,
check the last four numbers of the code displayed on the upper left-hand corner of
your screen during bootup. Larger numbers represent a newer BIOS file.
1. Type FORMAT A:/S at the DOS prompt to create a bootable system disk. DO
NOT copy AUTOEXEC.BAT and CONFIG.SYS to the disk.
2. Type COPY D:\AFLASH\AFLASH.EXE A:\ (assuming D is your CD-ROM drive)
to copy AFLASH.EXE to the boot disk you created.
4. In DOS mode, type A:\AFLASH to run AFLASH.
3. Reboot the computer from the floppy disk.
AFLASH works only in DOS mode. It does not work with certain
memory drivers that may be loaded when you boot from the hard drive.
It is recommended that you reboot using a floppy disk.
BIOS setup must specify “Floppy” as the first item in the boot
sequence.
If the word “unknown” appears after Flash Memory:, the memory chip
is either not programmable or is not supported by the ACPI BIOS and
therefore, cannot be programmed by the Flash Memory Writer utility.
2.1.2 Using AFLASH to update the BIOS