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Updating (flashing) BIOS from a CD-ROM or diskette
This section describes how to update (flash) the BIOS using a CD-ROM or diskette.
system program updates are available at
http://www.lenovo.com/support
on the World Wide Web.
1. To update (flash) the BIOS:
v If using a CD-ROM, make sure the computer is turned on. Insert the system
program update (flash) CD-ROM into the optical drive. The update begins.
v If using a diskette, make sure the computer is turned off. Insert the system
program update (flash) diskette and turn on the computer. The update
begins.
2.
When you are prompted to select a language, press the number on your
keyboard that corresponds to the language and then press Enter.
3. When prompted to change the serial number, press Y.
4. Type the seven-character serial number of your computer and then press Enter.
5. When prompted to change the machine type/model, press Y.
6. Type the seven-character machine type/model of your computer and then press
Enter.
7. Follow the instructions on the screen to complete the update.
Recovering from a POST/BIOS update failure
Attention: If an interruption occurs during a POST/BIOS update (flash update),
the computer might not restart correctly. If this occurs, perform the following
procedure (also known as a Boot-block recovery).
Note:
If your computer has no internal diskette drive, an optional USB diskette
drive must be connected to use the BIOS flash diskette.
1. Turn the computer off and insert the special recovery BIOS flash diskette in the
diskette drive.
2. Turn the computer on.
3. The recovery session takes two to three minutes. During this time you will hear
a series of beeps. After the update session completes, the series of beeps ends
and the computer automatically turns off. There is no video during the
recovery session.
4. Remove the special recovery BIOS flash diskette from the diskette drive.
494 Hardware Maintenance Manual