version 26KT28A

• Fixes a problem where the asset tag is corrupted when the asset tag in EEPROM is longer than the one in flash. Limits the copy to the length of the flash string.
• Adds code to issue hard drive "freeze lock" command to all drives on return from S3 power state
• Updates copyright message to include Lenovo
• Changes the UUID string in Setup to fix a problem with the last digit not being displayed due to the length of the string in some languages

version 26KT27A

• Fixes a problem where an APC USB UPS loses connectivity
• Fixes a problem where the system with Intel USB wireless LAN may hang at TP55
• Fixes a problem where the operating system hangs due to BIOS ACPI IRQ 10 or 11 setting
• Fixes incorrect SMBIOS structure 24 password information
• Corrects the display of characters in older DOS applications on non-English systems
• Fixes a problem where Zoom USB modem becomes unresponsive
• Corrects the display of accented characters in some languages at runtime. For example, the boot password prompt.
• Adds an Intel errata patch for the microprocessor firmware to address a potential issue that might cause a system to exhibit erratic behavior such as a system hang, reboot, blue screen, or Kernel Panic in Linux, and may also cause in-progress system operations (e.g., file, I/O) to fail. The possibility of this behavior is believed to be limited, but IBM strongly recommends that customers install this update as soon as possible to prevent the possibility of the issues listed above.

See Retain Tip H181898 for more details on this issue:
http://www.ibm.com/pc/support/site.wss/document.do?lndocid=TCTR-ERRN91

The IDs of the affected microprocessors are 0F29.

Note: If you want to apply this processor patch without updating the rest of BIOS, refer to the "FLASHING BACK TO AN OLDER LEVEL OF BIOS" topic in the README.1ST file contained in this BIOS update package

There are several ways to determine the ID of the processor:

1. Go to BIOS setup (hold down the F1 key and power up the system) and look under the "Advanced" tab. (The processor ID is about 1/2 way down the screen.)
2. Use the Microsoft "System Information" tool. Go to the task bar and click through the following selections:
   Click Start, select Programs, select Accessories, select System Tools, then click System Information.
   The first screen displayed with this tool has processor information.
   For example, a F24 ID processor will have the following entry.
   (The "F" is translated to a "15" by this tool.)
   "Processor x86 Family 15 Model 2 Stepping 4 GenuineIntel .."
3. DMI information. The processor ID is presented in the DMI (Desktop Management Interface) Type 4 structure. There are various tools (DMI browsers) available to view this information.
4. If you have a Windows installation that for some reason does not have the "System Information" tool, a utility to display the processor ID can be obtained from Intel at the following URL:
   http://support.intel.com/support/processors/tools/frequencyid/
5. System administrators may wish to refer to the following URL for an example of a Microsoft script file that extracts (among other things) the processor ID:
   http://www.microsoft.com/technet/community/scriptcenter/compmgmt/scrcm73.mspx

version 26KT26A

• Adds processor patch for 0F29 to ROM

version 26KT25A

• Increases maximum processor speed reported by SMBIOS structure 4 to 2.8GHz

version 26KT24A

• Fixes ACPI issue with UDMA slave device using capabilities of the master device
• Fixes data corruption on POV card and clearing 190 error
• Fixes potential bank 1 CMOS corruption due to SMI
• Corrects use of semaphores in SMBus code.

version 26KT23A

• Updates onboard video BIOS. Fixes video problems with the DVO flat panel displays

version 26KT22A

• Updates onboard video BIOS. Fixes intermittant video problems with DVO flat panel displays.
• Fixes "Compatibility Rev ID code"
• Fixes "Does not wake on LAN after losing AC power". We revert to a software approach where we power up, enable WOL, and go back down which is about three seconds into POST.
• Fixes fan failure which can occur if an application does not release the SMBus semaphore
• Fixes Windows Me resume hang when USB Device Support = Disabled
• Adds new level of processor microcode update files.

version 26KT21A

• Fixes a problem where the Intel Boot Agent does not load

version 26KT20A

• Fixes incorrect Setup Summary Screen CPU speed
• Updates SM BIOS FSB speed during POST
• In Setup, sets PXE Boot & PXE Base to Enabled when System Board Ethernet is enabled
• Disables native mode IDE support in ASL code
• Corrects the wrong prompt with power on password set
• Updates SMBIOS 4 to list the correct FSB speed
• 0F27 processor microcode update
• In Setup, enables PXE options when onboard ethernet is enabled

version 26KT19A

• Adds support for Intel memory reference code 1.2
• In Setup, greys out PXE options when onboard ethernet is disabled
• Fixes for loss of USB 2.0 device after hibernation
• Fixes for restoring ATAPI transfer rate on resume from S3 under W98
• Fixes occasional failure to wake from S3 via directed ping
• Fixes NT reboot problem
• Fixes Dual mode password

version 26KT18A

• Initial Production Release