Version 1YET65WW (1.29)
Note: This BIOS version will only work with Embedded Controller Program Version 1.06 (or higher).

• (New) When a system boots with a USB memory key installed, even if the system does not boot to the USB memory key, a DOS drive letter is assigned to a FAT partition. On the previous version of BIOS, the DOS drive letter was assigned only when the system booted from a USB memory key.

Version 1YET64WW (1.28)
Note: This BIOS version will only work with Embedded Controller Program Version 1.06 (or higher).

• (Fix) A high pitch audio noise may be produced by the battery mode power management while a USB 1.1 device is connected. (BIOS)

• Previously released BIOS version 1YET60WW, 1YET61WW and Embedded Controller 1.05 combination may cause a spontaneous wrong key input when you key input with an external PS/2 type keyboard.
  • Numeric characters (2, 4, 6 and 8) will be inserted internittently during cursor move with cursor keys.
  • A keyboard behaves as if shift key depressed until a shift key is pressed.
    • You can only type only Uppercase characters. (Some keys seem to keystrokes, because the shift cases are not defined)
    • Multiple selection with cursor keys
    • Numeric keypad will turn to cursor keys

  If you encounter these cases, please update the Embedded Controller to 1.06 (1YHT29WW).

• (Fix) With BIOS 1YET60WW or 1YET61WW, an unused PCI device appears on PCI configuration space Bus=0x0B, Device=0x00, Function=0x01. Due to this, the driver install wizard will run on Windows 2000, after upgrading the BIOS. As a result of this, the Device Manager will have an item, SD card host controller.(Microsoft Windows 2000 and Windows XP)
• (Fix) With BIOS 1YET60WW or 1YET61WW, a "Radio Off" function for internal wireless network device does not run. The selection item Radio Off does not appear in BIOS Setup menu (Select Config, select Network, select Internal Wireless Device).

Version 1YET61WW (1.26) - Removed from site
Notes: This BIOS version will only work with Embedded Controller Program Version 1.06 (or higher).

• * PC-Doctor DOS #151 version 2.0.1381d matches with this version and later. The previous version of the PC-Doctor DOS can not find some wireless LAN adapter cards.

• (Fix) (DOS) Floppy disk access error may occur on the floppy disk drive, connected to the FDD connector of the docking station.

Version 1YET60WW (1.25) - Removed from site
Note: This BIOS version will only work with Embedded Controller Program Version 1.05 (or higher).

• (New) PC-Doctor DOS #151 version 2.0.1381d matches with this version and later. The previous version of the PC-Doctor DOS can not find some wireless LAN adapter cards.
• (Fix) Intel Pentium M Processor and Centrino logos displayed on screen during POST were updated.
• (Fix) POST hang may be caused when damaged Hard drive is attached.
• (Fix) Some ExpressCards do not work due to a resource shortage.
• (Fix) ATI Display property does not show correct memory type.
• (New) Added new item "ThinkPad NumLock" in the BIOS Setup Utility menu. Click Config then click Keyboard/Mouse. If you select "Independent", NumLock on the ThinkPad system can be disabled independently regardless of the NumLock state of the external keyboard. If NumLock on the ThinkPad system is enabled, NumLock on the external keyboard will also be enabled. If you select "Synchronized", NumLock on the ThinkPad system and NumLock on the external keyboard are synchronized.
  Note: "ThinkPad NumLock" menu item is available only when the Embedded Controller Program (H8 controller firmware) is also updated to version 1YHT28WWW (1.05) or later.

Version 1YET59WW (1.24)
Note: This BIOS version will only work with Embedded Controller Program Version 1.03 (or higher).

• (New) A new BIOS setup option, that allows system startup without pressing the ESC key on POST 2010 warning message. Its location is 'BIOS Setup menu'->'Startup'->'Boot after message for Hard drive...'.
  Note: The cause of the 2010 message is using unsupported hard drive firmware version. Please use supported version as much as you can.
• (Fix) The CardBus Controller register setting was fixed.
• (Fix) System may hang up when boot device is changed in BIOS setup.
• (Fix) System may enter into standby in battery mode after Windows logon.

Version 1YET58WW (1.23)
Note: This BIOS version will only work with Embedded Controller Program Version 1.03 (or higher).

• (Fix) With BIOS 1YET56WW (version 1.21) or later, system will shutdown on Wake On LAN with a Ultrabay Slim Second Hard Drive adapter, even if no password is set in the second hard drive.
• (Fix) POST error appears on power-on, just after power off at a password prompt with a newly attached USB storage device.
• (Fix) System may not start with some USB devices, attached to docking station or port replicator.

Version 1YET57WW (1.22)
Note: This BIOS version will only work with Embedded Controller Program Version 1.03 (or higher).

• (New) Adjustment of new video memory settings on ATI-M24 models.
  Note: Due to this, the previous BIOS release can't support the new video memory settings.

Version 1YET56WW (1.21)
Note: This BIOS version will only work with Embedded Controller Program Version 1.03 (or higher).

• (New) Support for August 2005 models of ThinkPad T43/T43p.
• (New) Adjustment of video memory settings on ATI-M22 models.
  Note Due to this, the previous BIOS release can't support the new video memory settings.
• (New) Enhancement of security function on power-on: When hard drive password is set, regardless of other passwords settings, Wake On LAN from power off state does not work.
• (Fix) Monochrome VGA video mode does not work on DOS environment.
• (Fix) BIOS Fingerprint input screen timeout is set to 13 seconds occasionally. Its correct value is 40 seconds.

Version 1YET47WW (1.08)
Note: This BIOS version will only work with Embedded Controller Program Version 1.03 (or higher).

• (Fix) Adjust performance of system start and resume time on some models.

Version 1YET46WW (1.07)
Note: This BIOS version will only work with Embedded Controller Program Version 1.03 (or higher).

• (Fix) System may not resume from standby state intermittently.

Version 1YET45WW (1.06)
Note: This BIOS version will only work with Embedded Controller Program Version 1.03 (or higher).

• (New) Added new BIOS setup menu, to hide following internal communication device from Operating System.
  • Bluetooth: Config -> Network -> Internal Bluetooth Device
  • Modem: Config -> Modem -> Modem Device
  • Infrared: Config -> Infrared -> Infrared Device
• (Fix) Fast-IR transfer speed on Windows XP may be slow.
• (Fix) System may not boot from the hard drive intermittently.

Version 1YET43WW (1.05)
Note: This BIOS version will only work with Embedded Controller Program Version 1.03 (or higher).

• (Fix) System resume time from Windows standby state became longer by one second with BIOS 1YET42WW (1.04).

Version 1YET42WW (1.04)
Note: This BIOS version will only work with Embedded Controller Program Version 1.03 (or higher).

• (New) A new BIOS setup menu item to initialize Finger Print data.
• (New) A new POST warning message when a hard drive has an old firmware.
• (Fix) Some BIOS setup menu items are not copied, using a Remote CMOS Update Utility.
• (Fix) System does not boot from USB FDD, when Bluetooth power is turned on.

Version 1YET41WW (1.03a)
Note: This BIOS version will only work with Embedded Controller Program Version 1.00a (or higher).

• (New) Support for new video memory.

Version 1YET39WW (1.02)
Note: This BIOS version will only work with Embedded Controller Program Version 1.00a (or higher).

• (Fix) Improvement of Integrated Fingerprint Reader.
  Note: Because of this fix, you may need to re-install the fingerprint password after the BIOS update. The previous password can be installed. This is only required for the Fingerprint system after the BIOS update.

• (Fix) System hangs at first power on, after power source (AC adapter and battery) removal during standby state.
  
  

• ThinkPad T43, T43p (Machine types 2668, 2669, 2678, 2679, 2686, 2687)

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

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