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      BIOS Update Utility for Windows 8 (32-bit, 64-bit), 7 (32-bit, 64-bit), Vista (32-bit, 64-bit), XP - ThinkPad T420s, T420si

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      Name
      Operating System
      Version
      Released
      Download Now
      Checksum Data
      BIOS Update Utility
      exe
      5.7 MB
      Windows 8 (32-bit)
      Windows 8 (64-bit)
      Windows 7 (32-bit)
      Windows 7 (64-bit)
      Windows Vista (32-Bit)
      Windows Vista (64-Bit)
      Windows XP (32-bit)
      1.41
      3/4/2016
      README for BIOS Update Utility
      txtreadme
      23.1 KB
      Windows 8 (32-bit)
      Windows 8 (64-bit)
      Windows 7 (32-bit)
      Windows 7 (64-bit)
      Windows Vista (32-Bit)
      Windows Vista (64-Bit)
      Windows XP (32-bit)
      1.41
      3/4/2016

      This package updates the UEFI BIOS (including system program and Embedded Controller program) stored in the ThinkPad computer to fix problems, add new functions, or expand functions as noted below.

      Use the link below to obtain the BIOS in other file formats:


      Supported ThinkPad Systems

      • T420s, T420si

      Supported Operating Systems

      • Microsoft Windows 8 32-bit, 64-bit
      • Microsoft Windows 7 32-bit, 64-bit
      • Microsoft Windows Vista 32-bit, 64-bit
      • Microsoft Windows XP Professional SP3

      Summary of Changes

      Where:

      • UEFI: UEFI BIOS version
      • ECP: Embedded Controller Program version
      • [Important] Important update
      • (New) New function or enhancement
      • (Fix) Correction to existing function

      Version 1.41
      UEFI: 1.41 / ECP: 1.21

      • [Important] Security fix addresses LEN-2015-002 SMM "Incursion" Attack and some security fixes.
        (Note) If the UEFI BIOS has been updated to version 1.41 or higher, it is no longerable to roll back to the version before 1.41 for security improvement.
      • (Fix) Fixed an issue where the computer might not enter Startup interrupt menu.

      Additional Information

      Please refer to the README file for the following:

      • Installation Instructions
      • Determining Which Version is Installed
      • Complete list of summary of changes
      • Known limitations (if any)

      The following versions of UEFI BIOS and ECP (Embedded Controller Program) have been released to date.

      Package UEFI BIOS ECP Release
      1.41 1.41 (8CET61WW) 1.21  (8CHT28WW)
      1.21  (8YHT28WW)
      Current release

      1.39 1.39 (8CET59WW) 

      1.21 (8CHT28WW)
      1.21 (8YHT28WW)

      8cuj19us.exe
      8cuj19us.txt
      1.38 1.38 (8CET58WW) 1.21 (8CHT28WW)
      1.21 (8YHT28WW)
      8cuj18us.exe
      8cuj18us.txt
      1.37 1.37 (8CET57WW) 1.21 (8CHT28WW)
      1.21 (8YHT28WW)
      8cuj17us.exe
      8cuj17us.txt
      1.36 1.36 (8CET56WW) 
      1.21 (8CHT28WW)
      1.21 (8YHT28WW)
      8cuj16us.exe
      8cuj16us.txt
      1.35 1.35 (8CET55WW)
      1.20 (8CHT27WW) 8cuj15us.exe
      8cuj15us.txt
      1.34 1.34 (8CET54WW) 
      1.20 (8CHT27WW) 8cuj14us.exe
      8cuj14us.txt
      1.31 1.33 (8CET53WW) 1.19 (8CHT26WW)
      1.19 (8YHT26WW)
      8cuj13us.exe
      8cuj13us.txt
      1.31 1.31 (8CET51WW) 1.12 (8CHT25WW)
      1.12 (8YHT25WW)
      8cuj12us.exe
      8cuj12us.txt
      1.30 1.30 (8CET50WW) 1.12 (8CHT25WW)
      1.12 (8YHT25WW)
      8cuj11us.exe
      8cuj11us.txt
      1.29 1.29 (8CET49WW) 1.11 (8CHT24WW)
      1.11 (8YHT24WW)
      8cuj10us.exe
      8cuj10us.txt
      1.28 1.28 (8CET48WW) 1.10 (8CHT23WW)
      1.10 (8YHT23WW)
      8cuj09us.exe
      8cuj09us.txt
      1.25 1.25 (8CET45WW) 1.09 (8CHT22WW)
      1.09 (8YHT22WW)
      8cuj06us.exe
      8cuj06us.txt
      1.13 1.13 (8CET36WW) 1.08 (8CHT21WW)
      1.08 (8YHT21WW)
      8cuj05us.exe
      8cuj05us.txt
      1.12 1.12 (8CET35WW) 1.07 (8CHT20WW) 8cuj04us.exe
      8cuj04us.txt
      1.09 1.09 (8CET32WW) 1.05 (8CHT18WW) 8cuj03us.exe
      8cuj03us.txt
      1.05 1.05 (8CET28WW) 1.03 (8CHT16WW) 8cuj01us.exe
      8cuj01us.txt


      • Alias ID: MIGR-77010, MIGR-77010-KR
      • Document ID:DS014992
      • Last Updated :04 Mar 2016
      • © 2015 Lenovo