You need an AC adapter and a charged battery pack to update the system program.
If your computer is attached to any kinds of Docking station or port replicator, turn off the computer and detach it before proceeding.
Make sure the SPSD diskette is write protected.
Check the embedded controller version number by invoking the IBM BIOS Setup Utility or by running ThinkPad Configuration from the operating system, and selecting the System Information button.
Print these instructions or display on another computer.
Firmly connect the AC adapter to the computer.
Insert the System Program Service Diskette into the diskette drive and turn on the computer.
Select Read this first from the menu and carefully read the information that appears.
Press the Esc key to return to the menu.
Select Update system program and follow the instruction on the screen.
Attention: Do not turn off or suspend the computer until the update has been completed. If you turn off or suspend the computer while the update is still in progress, the system board may have to be replaced.
III. BIOS information
Each version of the BIOS update diskette contains the following system program information. The BIOS Version and the date as well as the Embedded controller version number can be viewed:
by running ThinkPad Configurator from your operating system and selecting the System Information button,
or by invoking IBM BIOS Setup Utility:
Make sure there is no diskette in the diskette drive, then turn off the computer.
Turn on the computer.
While the Press F1 for IBM BIOS Setup Utility message is displayed at the lower-left area of the screen, press the F1 key. The IBM BIOS Setup Utility menu will be displayed. If a password prompt appears, type the correct password.
The BIOS version and date are displayed on the first screen of the IBM BIOS Setup Utility.