![background image](http://html.mh-extra.com/html/ibm/thinkpad-i-series-1400/thinkpad-i-series-1400_hardware-maintenance-manual_607465032.webp)
Note: The system unit serial number is written in the label
attached on bottom of the computer.
Bios Levels
An incorrect level of BIOS can cause false error and
unnecessary FRU replacement. Use the following informa-
tion to determine the current level of BIOS installed in the
computer, the latest BIOS available for the computer, and
where to obtain the latest level of BIOS.
Current Level BIOS information.
1. Power-on the computer.
2. Press F1 at the IBM log screen to enter Setup.
3. Click on System Information and press Enter.
4. The System BIOS version will be displayed.
Sources for determining the latest level of BIOS avail-
able.
1. IBM PC Company Home Page
www.ibm.com/pc/us/
2. PC PartnerInfo-Technical Database
3. RETAIN
Sources for obtaining the latest level BIOS available.
1. IBM PC Company Home Page
www.ibm.com/pc/us/
2. PC PartnerInfo-Technical Database
To update the BIOS, see “Flash (BIOS) update procedure.”
Flash (BIOS) update procedure
1. Insert the System Program Service Diskette into the
diskette drive.
2. Power-on the computer
3. Select Update System Programs from the menu and
follow the instructions displayed on the screen.
ThinkPad i Series 1400/1500
23