IBM ThinkPad T20                                         July 05, 2000
System Program Service Diskette

Version 1.03 (IYET37WW)
======================================================================

Notice:
-------
This program is language independent and can be used with any language
system.

What This Diskette Does
-----------------------
The System Program Service Diskette given here can update the system
program stored in the ThinkPad system to fix problems, add new 
functions, or expand functions. 

This release supports the following system:
  - ThinkPad T20

To determine if you have to update the system program, please
refer to the "Summary of Change" section.

To update the system program, please refer to the "Installation 
instructions" section.


Released Versions
-----------------
Version 1.02 (IYET36WW) Initial Release
Version 1.03 (IYET37WW) A fix for some problems

Summary of Changes
------------------
 Key: <n.nn>  Diskette Version (for example, 1.00 means Version 1.00)
       (New)   New Function or Enhancement
       (Fix)   Correction to existing function

<1.02 - IYET36WW>
 - (New) Support for ThinkPad T20.

<1.03 - IYET37WW>
 - (Fix) A blue screen appears in Microsoft Windows 95/98 when 
         disabling a serial port or IR from the Device Manager 
         or the ThinkPad Configuration program.
 - (Fix) The Wake On LAN feature does not work.
 - (Fix) Memory read failure may occur in Microsoft Windows NT 4.0 
         when two 256MB memory cards are installed.
 - (Fix) A small noise is heard when Microsoft Windows 2000 is in 
         standby mode.
 - (Fix) Hang up at suspend on a docking station with HDD and EtherJet 
         PC Card installed in the docking station.

Installation Instructions
-------------------------
Notes: - 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.

1.  Print these instructions or display on another computer.
2.  Firmly connect the AC adapter to the computer.
3.  Insert the System Program Service Diskette into the diskette drive
    and turn on the computer.
4.  Select "Read this first..." from the menu and carefully read the
    information that appears.
5.  Press the Esc key to return to the menu.
6.  Select "Update system program" and follow the instruction on
    the screen.

    Warning: 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.

After the update has been completed, do the following to make the
changes effective.

7.  Make sure the System Program Service Diskette is removed from
    the diskette drive, then turn off the computer.
8.  Press and hold the F1 key, then turn on the computer. Hold the F1 
    key until the IBM BIOS Setup Utility menu appears.
9.  If a password prompt appears, type the correct password.
10. Press F9 key.
11. Select "Yes" to load default configuration.


BIOS Information
----------------
Each version of the System Program Service Diskette contains the
following system program (BIOS). The BIOS Version and the date can
be viewed by invoking IBM BIOS Setup Utility.

Embedded controller version number can be viewed by running ThinkPad
Configurator from your operating system and select System Information
from the Help menu or System Information button. Embedded controller
information can also be found by invoking IBM BIOS Setup Utility.

 Diskette   BIOS      BIOS         Embedded controller
 Version    Version   Date         Version
 --------   --------  ----------   -------------------
 1.02       IYET36WW  1999-12-21   1.00
 1.03       IYET37WW  1999-12-21   1.00


Memory Information
------------------
The following information shows memory areas that are either 
unavailable or that can be included with a memory manager such as 
EMM386.

Reserved BIOS Area:
  C0000-CBFFF  (reserved for Video BIOS)ved
  E0000-FFFFF  (reserved for BIOS)

Trademarks
----------
 * IBM and ThinkPad are trademarks of IBM Corporation in the United 
   States.
 * Windows is a trademark of Microsoft Corporation.

Other company, product, and service names may be registered
trademarks, trademarks or service marks of others.