• (New) Support for ThinkPad T40/T40p.

Symptom corrected by version 1.02 - 1RHT15WW

• (Fix) Fix reboot problem to change battery source to second battery when system enters Suspend.

Symptoms corrected by version 2.03 - 1RHT62WW
Note: This version of Embedded Controller Program will only work with BIOS Version 2.06 (or higher).

• (New) Support for ThinkPad T41 and R50.
• (Fix) Shutdown request from low battery sometimes does not work when dual battery is installed in system and disabled low battery action in OS.

Symptom corrected by version 2.04 - 1RHT63WW
Note: This version of Embedded Controller Program will only work with BIOS Version 2.10 (or higher).

• (New) Support for ThinkPad T41p and R50p.

Symptoms corrected by version 3.00 - 1RHT66WW
Note: This version of Embedded Controller Program will only work with BIOS Version 3.00 (or higher).

• (New) Support for ThinkPad R51(1829, 1830, 1831, 1836).
• (Fix) Copyright string change for year 2004.

Symptom corrected by version 3.01a - 1RHT68WW
Note: This version of Embedded Controller Program will only work with BIOS Version 3.04 (or higher).

• Added support for ThinkPad T42, T42p systems.

Symptom corrected by version 3.02 - 1RHT69WW
Note: This version of Embedded Controller Program will only work with BIOS Version 3.06f (or higher).

• (New) Support for Battery data logging and cell voltage check.

Symptom corrected by version 3.03 - 1RHT70WW
Note: This version of Embedded Controller Program will only work with BIOS Version 3.06f (or higher).

• (Fix) Reduced Fan noise in some models.

Symptoms corrected by version 3.04 - 1RHT71WW
Note: This version of Embedded Controller Program will only work with BIOS Version 3.13 (or higher).

• (Fix) Sometimes battery does not charge.
• (Fix) Some MS PS/2 mice will not work.
• (Fix) Some Fn key combinations will not work. This fix also is in BIOS, EC version 3.04 needs BIOS version 3.13 and vise versa.
• (Fix) After completing the Embedded Controller Program update and the computer is automatically rebooted, the error message, "Operating System not found", may be displayed and reboot stops.
  
  

Version 3.04 - 1RHT71WW - Revision
Note: This version of Embedded Controller Program will only work with BIOS Version 3.13 (or higher).

• (Fix) (The German Windows XP environment only, Utility version only) During update, the error message,"An error occurred while accessing the diskette drive. Make sure that the correct diskette is in the drive." may be displayed and update stops.

Notes:

1. There is no functional change from former Version 3.04. If you have already updated the Embedded Controller Program to version 3.04 without any problems, there is no need to update the Embedded Controller Program with this release.
   
2. ThinkPad Software Installer may not be able to update the Embedded Controller Program with this release. In such the case, manual installation is required. Refer to the Updating Embedded Controller Program section and follow the update instructions.

Any of the following ThinkPad systems:

• ThinkPad R50, R50p
• ThinkPad R51 (1829, 1830, 1831, 1836)
• ThinkPad T40, T40p
  
• ThinkPad T41, T41p
  
• ThinkPad T42, T42p
  
  

Click here to download the latest Embedded Controller Program (Non-Diskette).
Click here to download the latest Embedded Controller Program (Diskette).

Click here to download the latest BIOS Update (Diskette).
Click here to download the latest BIOS Update (Non-Diskette).