May 19, 1999
IBM ThinkPad 390, i Series 1720/1721
System Program Service Diskette

Version 5.28 (R01-D4)
========================================================================

**********************************************************************
		              WARNING
 
     THIS BIOS PROGRAM IS DESIGNED TO BE USED WITH ONLY WINDOWS 2000.
     PLEASE DO NOT USE IT FOR OTHER OS.

**********************************************************************

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


What This Diskette Does
-----------------------

This System Program Service Diskette updates the system BIOS program
stored in the ThinkPad system to fix problems, add new functions, or
expand functions as noted below.  The supported models are as follows.

   - ThinkPad 390
   - ThinkPad i Series 1720/1721

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

To update the system program, please refer to the "Updating System
Program" section.


Released Version
----------------
Version 5.28     Windows 2000 beta 3 test.

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

<5.28 - R01-D4>
 - (New) Support for Windows 2000 Beta 3 test.


Updating System Program
-----------------------

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

Notes: - You need an AC adapter and a charged battery pack to update
           the system program.

1.  Print these instructions or display them 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.  When prompted press the '1' key to update the system program.

    Warning: Do not turn off the computer until the update
             has been completed. IF YOU TURN OFF THE
             COMPUTER WHILE THE UPDATE IS STILL IN PROGRESS, THE SYSTEM
             BOARD MAY HAVE TO BE REPLACED.


System Program Information
--------------------------

Each version of the System Program Service Diskette contains the
following system BIOS program.

  Diskette    BIOS        BIOS
  Version     Date        Version
  --------    --------    ------------
  5.28        05/17/99    V1.0 R01-D4
  5.27        05/12/99    V1.0 R01-D3
  5.24        04/15/99    V1.0 R01-D0
  5.20        12/24/98    V1.0 R01-C3
  5.17        12/12/98    V1.0 R01-C0
  5.16        10/22/98    V1.0 R01-A7
  5.15        10/15/98    V1.0 R01-A6

The BIOS Date can be viewed by invoking "IBM BIOS Setup Utility".
The BIOS Version can be viewed by selecting "Config" in the 
"IBM BIOS Setup Utility" menu.


Trademarks
----------

  * IBM, OS/2 and ThinkPad are registered trademarks of IBM Corporation.
  * Windows is a registered trademark of Microsoft Corporation.

  Other company, product, and service names may be registered trademarks,
  trademarks or service marks of others. BOARD MAY HAVE TO BE REPLACED.


System Program Information
--------------------------

Each version of the System Program Service Diskette contains the
following system BIOS program.

  Diskette    BIOS        BIOS
  Version     Date        Version
  --------    --------    ------------
  5.28        05/17/99    V1.0 R01-D4
  5.27        05/12/99    V1.0 R01-D3
  5.24        04/15/99    V1.0 R01-D0
  5.20        12/24/98    V1.0 R01-C3
  5.17        12/12/98    V1.0 R01-C0
  5.16        10/22/98    V1.0 R01-A7
  5.15        10/15/98    V1.0 R01-A6

The BIOS Date can be viewed by invoking "IBM BIOS Setup Utility".
The BIOS Version can be viewed by selecting "Config" in the 
"IBM BIOS Setup Utility" menu.


Trademarks
----------

  * IBM, OS/2 and ThinkPad are re