Flash BIOS update - bootable diskette version
for 3000 J100 (type 8252, 8253, 8254, 8453, 8454, 8455)
    ThinkCentre E50 (type 8472, 8473, 8719, 8771, 8772,
                          8773, 8774, 8817, 8818, 8819)
Version 40KT27A
Installation README


This package updates the basic input/output system (BIOS) on
3000 J100 (type 8252, 8253, 8254, 8453, 8454, 8455) and
ThinkCentre E50 (type 8472, 8473, 8719, 8771, 8772, 8773, 8774,
8817, 8818, 8819) systems.

BIOS is programming that controls low-level hardware operations,
including interactions with diskette drives, hard disk drives,
and the keyboard. The BIOS is stored on a chip.  Your computer
uses flash BIOS, which can be updated through a program on a 
flash diskette so that you do not have to replace the BIOS
chip to update the BIOS.

Do not write protect the flash diskette as this may cause the
flash process to hang.

Note: Make note of any settings you have changed in the BIOS
Configuration Utility.  These settings may have to be re-entered
after updating the BIOS.

Print this file so that you can refer to it during the installation.


Downloading the package
=======================
1. Click the file link to download the file from the web page.
2. When prompted, select a drive and directory in which to save 
   the downloaded file, be sure to select a path that does not
   have a space in it's name.


Extracting the package
======================
Installing this update involves creating a BIOS flash diskette and
running the flash program from the diskette. Before you begin,
have a blank 1.44 MB diskette ready.

1. Click Start, select Find or Search, then click Files and Folders.
2. Insert a blank 1.44MB floppy diskette into the diskette drive.
3. Type 40jt27a.exe in the search field, then click Find Now.
   This will locate the file you just downloaded.
4. Double-click the 40jt27a.exe icon.
5. Follow the onscreen prompts. All the necessary files will be
   extracted to the diskette.


Installing the package
======================
1.  Close all open applications.
2.  Leave the diskette in the A: drive, and shut down and restart
    the computer to start the BIOS flash program.
3.  You will be asked if you wish to update the serial number of
    your machine.
4.  Press N. You will be asked if you wish to update the machine
    type/model number of your machine.
5.  Press N.
6.  Do not turn off the system during this process, wait until
    you see the following message:

                   Flashing Complete
      Remove Floppy Diskette & hit <F1> to Continue

7.  Remove the diskette from the A: drive.
8.  Press Enter.

Note:
If your system boots back to a 1962 POST error or displays a
picture of a diskette on the screen, enter the Setup utility
by pressing F1 during startup and change the Startup options
to include your hard drive.


Summary of Changes
==================
General Information:

40JTxxA is the flash diskette level.
40KTxxA is the binary image level. (BIOS)
NOTE: All changes carry forward. That is, if a change is added
      in 01, it is also in 02, 03 etc.

Changes for 40KTxxA/40JTxxA:

40KT27A/40JT27A
- Fixes a problem where the system will hang at POST when a Cannon
  MP510 USB printer is connected

40KT26A/40JT26A
- Fixes a problem where USB hard drive data transfer is slow
  under windows 2000

40KT24A/40JT24A
- Enhances Serial ATA (SATA) detection

40KT23A/40JT23A
- Fixes a problem where the system hangs when a diskette is
  write protected and a file is copied onto the diskette using
  a USB floppy diskette drive

40KT22A/40JT22A
- Fixes a problem where PXE is not in the boot menu
- Fixes a problem where Windows XP hangs if you keep moving USB
  mouse
- Fixes some multi language string issues
- Changes OSB logo display location
- Adds gigabit LAN support including mac address display

40KT21A/40JT21A
- Changes 'Desactive' to 'Desactiver' in the French language
  version
- Fixes a problem where the system hanges during first boot
  when using a USB keyboard or USB hard drive by adding a USB
  delay
- Fixes DMI offset per Lenovo specification

40KT20A/40JT20A
- Fixes a problem that occurs with USB hard drives
- Updates CPU patch file

40KT19A/40JT19A
- Changes Realtek LAN option ROM

40KT18A/40JT18A
- Fixes Boot Menu display
- Corrects IDE detection in CMOS Setup
- Sets System FAN start PWM to 43
- Adds Frequency/Voltage Control to priority menu
- Fixes a problem where the system cannnot boot via a PXE server

40KT17A/40JT17A
- Fixes Boot Menu display

40KT16A/40JT16A
- Initial Production Release


Trademarks
==========
ThinkCentre is a trademark of the Lenovo Corporation in the
United States, other countries, or both.

Microsoft and Windows are trademarks of Microsoft Corporation in
the United States, other countries, or both.

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

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LENOVO DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS OR IMPLIED,
INCLUDING WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF FITNESS
FOR A PARTICULAR PURPOSE AND MERCHANTABILITY WITH RESPECT TO THE
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GRANTS NO LICENSES TO ANY PATENTS OR COPYRIGHTS.

(C) Copyright Lenovo Corporation 2007, all rights reserved.