IBM (Thinkpad) mobile BIOS update list

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NOTE:

Before the BIOS update procedure you need to make sure that your Embedded Controller Program is compatible with the BIOS version you want to apply. If not, obtain the additional package, the Embedded Controller Program Version 1.xx (depends on model), and update the Embedded Controller Program from within your Operating System (Windows based Flasher). If you need to update Embedded Controller Program as well as the BIOS, update the BIOS first.

DEZ-2004:

• DOWNLOAD & iNFO
  ThinkPad R31 BIOS v3.11, released 01-DEZ-2004
  - Display swtich Hot key (Fn+F7) may not work with WindowsXP SP2.
  

JAN-2005:

• DOWNLOAD & iNFO
  ThinkPad G41 BIOS v1.06, released 27-JAN-2005
  - (Fix) Wrong CPU speed may be displayed in BIOS Setup on the machine with a CPU.
  - (Fix) After display mode was set by GUI on Desktop, display mode may be changed when LID is re-opened.
  - (Fix) Some systems power on automatically after AC/Battery plug in from no power state.
  - (Fix) "unknown" may be returned for Processor family of SMBIOS type4.
  
• DOWNLOAD & iNFO
  ThinkPad R40 BIOS v1.20, released 03-JAN-2005
  (Machine types: 2681, 2682, 2683, 2896, 2898, 2899)
  - (Fix) The clock frequency (speed) of CPU is not set to the highest speed in battery mode even if "Intel® SpeedStep technology" option of "Power" of "Config" in the "IBM BIOS Setup Utility" menu is set to Enabled and its "Mode for Battery" option is set to "Maximum Performance".
  
• DOWNLOAD & iNFO
  ThinkPad R40e BIOS v1.33, released 03-JAN-2005
  (Machine types: 2684, 2685)
  - (Fix) The clock frequency (speed) of CPU is not set to the highest speed in battery mode even if "Intel® SpeedStep technology" option of "Power" of "Config" in the "IBM BIOS Setup Utility" menu is set to Enabled and its "Mode for Battery" option is set to "Maximum Performance".
  
• DOWNLOAD & iNFO
  ThinkPad R50e BIOS v1.22, released 31-JAN-2005
  Note:
  This BIOS version will only work with Embedded Controller Program Version 1.01 (or higher).
  - (Fix) The clock frequency (speed) of CPU is not set to the highest speed in battery mode even if "Intel® SpeedStep technology" option of "Power" of "Config" in the "IBM BIOS Setup Utility" menu is set to Enabled and its "Mode for Battery" option is set to "Maximum Performance".
  
• DOWNLOAD & iNFO
  ThinkPad R51 BIOS v1.20, released 31-JAN-2005
  (Machine types 2883, 2887, 2888, 2889, 2894, 2495)
  Note:
  This BIOS version will only work with Embedded Controller Program Version 1.03 (or higher).
  - (Fix) The clock frequency (speed) of CPU is not set to the highest speed in battery mode even if "Intel® SpeedStep technology" option of "Power" of "Config" in the "IBM BIOS Setup Utility" menu is set to Enabled and its "Mode for Battery" option is set to "Maximum Performance".
  

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FEB-2005:

• DOWNLOAD & iNFO | BIOS v1.55, released 01-FEB-2005
  ThinkPad X40
  Note:
  This BIOS version will only work with Embedded Controller Program Version 1.12 (or higher).
  - (Fix) "Access IBM" may be launched after resuming from hibernation State.
  
• DOWNLOAD & iNFO | BIOS v3.14, released 17-FEB-2005
  ThinkPad R50, R50p
  ThinkPad R51 (Machine Type: 1829, 1830, 1831 and 1836)
  ThinkPad T40, T40p, T41, T41p, T42, T42p
  Note:
  This BIOS version will only work with Embedded Controller Program Version 3.04 (or higher).
  - (Fix) "Access IBM" may be launched after resuming from hibernation State.
  - (Fix) Improvement of Integrated Fingerprint Reader.
  NOTE: Because of this fix, you need to re-install the finger print password after BIOS update. The previous password can be installed.
  This is only once required for Fingerprint system after BIOS update.
  - (Fix) The system hangs while OS/2 is booted up if video expansion mode is enabled.
  - (Fix) Once Access IBM starts with using Access IBM button and then is closed, it is freely launched after resuming from hibernation mode.