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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 T520 and T520i

      Back#ProductName# - Downloads

      Name
      Operating System
      Version
      Released
      Download Now
      Checksum Data
      BIOS Update Utility
      exe
      6.4 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)
      1.46
      10/26/2016
      README for BIOS Update CD
      txtreadme
      27 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)
      1.46
      10/26/2016

      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

      • T520, T520i

       

      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:

      • [Important] Important update
      • (New) New function or enhancement
      • (Fix) Correction to existing function

      Version 1.46
      UEFI: 1.46 / ECP: 1.36

      • [Important] Security fix addresses LEN-8324 System Management Mode (SMM) BIOS Vulnerability.
        • (Note)
          If the UEFI BIOS has been updated to version 1.46 or higher, it is no longerable to roll back to the version before 1.46 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 (ECP ID)
      Release
      1.46 1.46 (8AET66WW) 1.36 (8AHT42WW)
      1.36 (8XHT42WW)
      Current Release
      1.45 1.45 (8AET65WW)
      1.36 (8AHT42WW)
      1.36 (8XHT42WW)
      8auj26us.exe
      8auj26us.txt
      1.44 1.44 (8AET64WW) 1.36 (8AHT42WW)
      1.36 (8XHT42WW)
      8auj25us.exe
      8auj25us.txt
      1.43 1.43 (8AET63WW) 1.36 (8AHT42WW)
      1.36 (8XHT42WW)

      8auj24us.exe
      8auj24us.txt

      1.42 1.42 (8AET62WW) 1.36 (8AHT42WW)
      1.36 (8XHT42WW)
      8auj23us.exe
      8auj23us.txt
      1.41 1.41 (8AET61WW)  

      1.36 (8AHT42WW)
      1.36 (8XHT42WW)

      8auj22us.exe
      8auj22us.txt
      1.40 1.40 (8AET60WW) 1.35 (8AHT41WW)
      1.35 (8XHT41WW)
      8auj21us.exe
      8auj21us.txt
      1.39 1.39 (8AET59WW) 1.34 (8AHT40WW)
      1.34 (8XHT40WW)
      8auj20us.exe
      8auj20us.txt
      1.38 1.38 (8AET58WW) 1.34 (8AHT40WW)
      1.34 (8XHT40WW) 
      8auj19us.exe
      8auj19us.txt
      1.37 1.37 (8AET57WW) 1.33 (8AHT39WW)
      1.33 (8XHT39WW) 
      8auj18us.exe
      8auj18us.txt
      1.36 1.36 (8AET56WW) 1.20 (8AHT38WW)
      1.20 (8XHT38WW)
      8auj17us.exe
      8auj17us.txt
      1.35 1.35 (8AUJ16US) 1.19 (8AHT37WW) 
      1.19 (8XHT37WW)
      8auj16us.exe
      8auj16us.txt
      1.34 1.34 (8AET54WW) 1.19 (8AHT37WW)
      1.19 (8XHT37WW)
      8auj15us.exe
      8auj15us.txt
      1.33 1.33 (8AET53WW) 1.19 (8AHT37WW)
      1.19 (8XHT37WW)
      8auj14us.exe
      8auj14us.txt
      1.32 
      1.32 (8AET52WW) 1.18 (8AHT36WW)
      1.18 (8XHT36WW)
      8auj13us.exe
      8auj13us.txt
      1.31 1.31 (8AET51WW) 1.17 (8AHT35WW)
      1.17 (8XHT35WW)
      8auj12us.exe
      8auj12us.txt
      1.30 1.30 (8AET50WW) 1.17 (8AHT35WW)
      1.17 (8XHT35WW)
      8auj11us.exe
      8auj11us.txt
      1.28 1.28 (8AET48WW) 1.16 (8AHT34WW)
      1.16 (8XHT34WW)
      8auj09us.exe
      8auj09us.txt
      1.27 1.27 (8AET47WW) 1.15 (8AHT33WW)
      1.15 (8XHT33WW)
      8auj08us.exe
      8auj08us.txt
      1.26 1.26 (8AET46WW) 1.15 (8AHT33WW)
      1.15 (8XHT33WW)
      8auj07us.exe
      8auj07us.txt
      1.25 1.25 (8AET45WW) 1.14 (8AHT32WW) 8auj06us.exe
      8auj06us.txt
      1.22 1.22 (8AET42WW) 1.13 (8AHT31WW) 8auj05us.exe
      8auj05us.txt
      1.21 1.21 (8AET41WW) 1.09 (8AHT27WW) 8auj04us.exe
      8auj04us.txt
      1.13 1.13 (8AET33WW) 1.06 (8AHT24WW) 8auj02us.exe
      8auj02us.txt
      1.11 1.11 (8AET31WW) 1.05 (8AHT23WW) 8auj01us.exe
      8auj01us.txt

      • Alias ID: MIGR-77001, MIGR-77001-KR
      • Document ID:DS018810
      • Last Updated :18 Nov 2016
      • © 2015 Lenovo