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Flash BIOS update - ThinkCentre M55, M55p - NON-AMT
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Flash BIOS update (Flash from operating system version)
2jjy49usa.exe
2.25 MB
2JKT49A 16 Jan 2009
Installation instructions for Flash BIOS update (Flash from operating system version - 32 bit OS support only)
2jjy49usa.txt
13 KB
2JKT49A 16 Jan 2009
Flash BIOS update (diskette version) - Update diskette
2jjt49a.exe
1.05 MB
2JKT49A 16 Jan 2009
Installation instructions for Flash BIOS update (diskette version)
2jjt49a.txt
14 KB
2JKT49A 16 Jan 2009
Flash BIOS update (CD ISO image version)
2jj949a.iso
1.65 MB
2JKT49A 16 Jan 2009
Installation instructions for Flash BIOS update (CD ISO image version)
2jj949a.txt
13 KB
2JKT49A 16 Jan 2009
Flash BIOS update (diskette version) - Utilities diskette
2jj249a.exe
176 KB
2JKT49A 16 Jan 2009
This package updates the basic input/output system (BIOS) on ThinkCentre M55, M55p - NON-AMT

This package is for use with systems that are not AMT capable.

BIOS is programming that controls low-level hardware operations, including interactions with diskette drives, hard 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.

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.
Additional information
Summary of changes

version 2JKT49A

  • Fixes the issue where Winphlash tool shows 149 error after resume from S3
  • Updates Winphlash tool
Summary of changes made in previous updates

Determining if your system is AMT capable
  1. Click Start, then click Run.
  2. Type msinfo32.exe, then click OK.
  3. Select System Summary.
  4. Look for BIOS Version/Date. You should see a value similar to either '2MKTxxAUS' or '2JKTxxAUS'. If the first two characters of the value are '2J', then your system is not AMT capable and this package applies to your system. If your BIOS version starts with '2M', then you should click the following link to obtain the correct BIOS:
    Flash BIOS update - ThinkCentre M55p
Downloading the update
  1. In most instances, you will need only one of the listed exe or iso files.
    • If you prefer to update your BIOS from within Windows, download 2jjy49usa.exe.
    • If you prefer to create a diskette to update your BIOS, download both 2jjt49a.exe and 2jj249a.exe.
    • If you prefer to create a bootable CD to update your BIOS, download 2jj949a.iso.
  2. Click the appropriate file link to download the file from the Web page.
  3. 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 its name.
Installing the update

Follow the instructions provided in the corresponding txt file from above.

  • If you prefer to update your BIOS from within Windows, view 2jjy49usa.txt.
  • If you prefer to create a bootable diskette to update your BIOS, view 2jjt49a.txt.
  • If you prefer to create a bootable CD to update your BIOS, view 2jj949a.txt.

Attention: Do not under any circumstance power off or restart the system during the Flash update procedure. Doing so will critically damage your system.

Obtain instructions for extracting a diskette image or if you are extracting this image under Microsoft Windows NT, 2000, or XP

Previous versions
File Version Release date Description
2jjy47usa.exe 2JKT47A 18 Sep 2008 Flash BIOS update (Flash from operating system version)
2jjy47usa.txt 2JKT47A 18 Sep 2008 Installation instructions for flash BIOS update (Flash from operating system version)
2jjt47a.exe 2JKT47A 18 Sep 2008 Flash BIOS update (diskette version) - Update Diskette
2jj247a.exe 2JKT47A 18 Sep 2008 Flash BIOS update (diskette version) - Utilities Diskette
2jjt47a.txt 2JKT47A 18 Sep 2008 Installation instructions for flash BIOS update (diskette version)
2jj947a.iso 2JKT47A 18 Sep 2008 Flash BIOS update (CD ISO image version)
2jj947a.txt 2JKT47A 18 Sep 2008 Installation instructions for flash BIOS update (CD ISO image version)


If you are unable to find what you are looking for, please do try the following options:
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Country Availability
AvailableWorldwide
Document ID : DS014956
Legacy Document ID : MIGR-66068
Last Updated :
Copyright © Lenovo 2013, all rights reserved
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