IBM ThinkPad                                              January 06, 1999
System Program Service Diskette Version 5.17
============================================


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 Change" section.

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


Released Version
----------------

Version 5.17     Fixes for some problems
Version 5.16     Fixes for some problems
Version 5.15     Initial release


Summary of Change
-----------------

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

<5.17>
- (Fix) OS/2: When the system resumes from suspend or hibernation,
        sometimes audio function is not available.
- (Fix) OS/2: When the system resumes from suspend or hibernation,
        sometimes short strange noise can be generated.
- (Fix) Windows NT/95/98: The system cannot enter hibernation mode from
        suspend by hibernation timer.
- (Fix) If the processor speed is not set to "Fixed Max" in BIOS setup,
        the system hangs up after resuming from hibernation mode.

<5.16>
- (Fix) System hang after resume from Suspend via Standby timer of 
        Windows 98 while Power On Password is enabled.
- (Fix) System Crash Page: Using IntelliSync 97 to transfer file will hang.

<5.15>
- (New) Support for ThinkPad 390


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

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 program (BIOS). 

  Diskette   BIOS
  Version    Version
  --------   ------------
  5.17       V1.0 R01-C0
  5.16       V1.0 R01-A7
  5.15       V1.0 R01-A6


Trademarks
----------

  * IBM, ThinkPad and OS/2 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.