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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 T420, T420i

      Back#ProductName# - Downloads

      Name
      Operating System
      Version
      Released
      Download Now
      Checksum Data
      BIOS Update Utility
      exe
      6.6 MB
      Windows 7 (32-bit)
      Windows 7 (64-bit)
      Windows 8 (32-bit)
      Windows 8 (64-bit)
      Windows Vista (32-Bit)
      Windows Vista (64-Bit)
      Windows XP (32-bit)
      1.49
      10/4/2016
      README for BIOS Update Utility
      txtreadme
      27 KB
      Windows 7 (32-bit)
      Windows 7 (64-bit)
      Windows 8 (32-bit)
      Windows 8 (64-bit)
      Windows Vista (32-Bit)
      Windows Vista (64-Bit)
      Windows XP (32-bit)
      1.49
      10/4/2016

      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

      • T420, T420i

      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 1.49
      UEFI: 1.49 / ECP: 1.20

      • [Important] Security fix addresses LEN-8324 System Management Mode (SMM) BIOS Vulnerability.
        (Note) If the UEFI BIOS has been updated to version 1.49 or higher, it is no longerable to roll back to the version before 1.49 for security improvement.
      • (Fix) Fixed an issue where the brightness control might not work on Windows XP.

      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
      1.49 1.49 (83ET79WW) 1.20  (83HT30WW)
      1.20  (8WHT30WW)
      Current release
      1.48  1.48 (83ET78WW)
      1.20 (83HT30WW)
      1.20 (8WHT30WW) 
      83uj29us.exe
      83uj29us.txt
      1.46 1.46 (83ET76WW) 1.20 (83HT30WW)
      1.20 (8WHT30WW)
      83uj28us.exe
      83uj28us.txt
      1.45 1.45 (83ET75WW) 1.20 (83HT30WW)
      1.20 (8WHT30WW)
      83uj27us.exe
      83uj27us.txt
      1.44 1.44 (83ET74WW) 1.20 (83HT30WW)
      1.20 (8WHT30WW)
      83uj26us.exe
      83uj26us.txt
      1.43 1.43 (83UJ25US) 1.20 (83HT30WW)
      1.20 (8WHT30WW)
      83uj25us.exe
      83uj25us.txt
      1.42 1.42 (83UJ24US) 1.19 (83HT29WW)
      1.19 (8WHT29WW)
      83uj24us.exe
      83uj24us.txt
      1.41 1.41 (83UJ23US) 1.19 (83HT29WW)
      1.19 (8WHT29WW)
      83uj23us.exe
      83uj23us.txt
      1.40 1.40 (83ET70WW) 1.19 (83HT29WW)
      1.19 (8WHT29WW)
      83uj22us.exe
      83uj22us.txt
      1.39 1.39 (83ET69WW) 1.18 (83HT28WW)
      1.18 (8WHT28WW)
      83uj21us.exe
      83uj21us.txt
      1.37 1.37 (83ET67WW) 1.11 (83HT27WW)
      1.11 (8WHT27WW)
      83uj20us.exe
      83uj20us.txt
      1.36 1.36 (83ET66WW) 1.11 (83HT27WW)
      1.11 (8WHT27WW)
      83uj19us.exe
      83uj19us.txt
      1.35 1.35 (83ET65WW) 1.11 (83HT27WW)
      1.11 (8WHT27WW)
      83uj18us.exe
      83uj18us.txt
      1.34 1.34 (83ET64WW) 1.11 (83HT27WW)
      1.11 (8WHT27WW)
      83uj17us.exe
      83uj17us.txt
      1.33-1.10 1.33 (83ET63WW) 1.10 (83HT26WW)
      1.10 (8WHT26WW)
      83uj16us.exe
      83uj16us.txt
      1.33 1.33 (83ET63WW) 1.09 (83HT25WW)
      1.09 (8WHT25WW)
      83uj15us.exe
      83uj15us.txt
      1.32 1.32 (83ET62WW) 1.09 (83HT25WW)
      1.09 (8WHT25WW)
      83uj14us.exe
      83uj14us.txt
      1.30 1.30 (83ET60WW) 1.08 (83HT24WW)
      1.08 (8WHT24WW)
      83uj12us.exe
      83uj12us.txt
      1.29 1.29 (83ET59WW) 1.08 (83HT24WW)
      1.08 (8WHT24WW)
      83uj11us.exe
      83uj11us.txt
      1.28 1.28 (83ET58WW) 1.08 (83HT24WW)
      1.08 (8WHT24WW)
      83uj10us.exe
      83uj10us.txt
      1.27 1.27 (83ET57WW) 1.08 (83HT24WW)
      1.08 (8WHT24WW)
      83uj09us.exe
      83uj09us.txt
      1.26 1.26 (83ET56WW) 1.08 (83HT24WW) 83uj08us.exe
      83uj08us.txt
      1.23 1.23 (83ET53WW) 1.07 (83HT23WW) 83uj06us.exe
      83uj06us.txt
      1.22 1.22 (83ET52WW) 1.07 (83HT23WW) 83uj05us.exe
      83uj05us.txt
      1.15 1.15 (83ET45WW) 1.06 (83HT22WW) 83uj03us.exe
      83uj03us.txt



      • Alias ID: MIGR-77071, MIGR-77071-KR
      • Document ID:DS018785
      • Last Updated :04 Oct 2016
      • © 2015 Lenovo