12     IBM Desktop System HMM
Flash (BIOS) Update Procedure 
NOTE: 
 The flash update procedure does not change 
the model number and serial number 
information in BIOS. 
1. Prepare a bootable DOS diskette with 
AWDFLASH.EXE, and one XXXXXXX.BIN files 
NOTE: 
 The AWDFLASH.EXE are flash utility 
programs. The one VXXYYZZ.RN file has the 
BIOS checksum information. The 
XXXXXXX.BIN is BIOS source code binary file. 
2. Insert the diskette and boot from drive A.
WARNING: 
 Do not boot with any memory related 
driver such as HIMEM.SYS, EMS.SYS....
3. At the DOS prompt, type 
A:> AWDAFLASH 
XXXXXXX.BIN /PY/SN/CD/CP
 then press 
Enter
. 
4. The program updates the BIOS automatically. 
IMPORTANT: 
Verify the BIOS checksum value shown 
on screen is the same as the one in 
VXXYYZZ.RN file.
WARNING: 
Do not turn off the system power while the 
BIOS is programming, or the flash ROM will be 
destroyed. 
5. Power off system after the BIOS is completely 
updated.