End of Development Support

This product is no longer being actively supported by development (End of Development Support) and no further software updates will be provided. Any software or support resources provided by Lenovo are made available “AS IS” and without warranties of any kind, express or implied. Products still covered under the Lenovo Limited Warranty will be covered for repair.

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

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

In This Article
Compatible DevicesCompatible Operating SystemsWhat's More
Available Drivers
File name
Size
Version
Operating System
Release Date
Severity
Options

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

6.406 MB
1.49

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)

26 Jun 2018
Critical

BIOS Update Utility

8auj30us.exe

6.38 MB
1.49

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)

26 Jun 2018
Critical

README

8auj30us.txt

26.5 KB
1.49

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)

26 Jun 2018
Critical

Description

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.

Compatible Devices

Supported ThinkPad Systems

  • T520, T520i

Compatible 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

What's More

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:

Summary of Changes

Where:

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

Version 1.49
UEFI: 1.49/ ECP: 1.36

  • [Important] Security fix addresses LEN-22133 Speculative Execution Side Channel Variants 4 and 3a (CVE-2018-3639, CVE-2018-3640). Refer to Lenovo's Security Advisory page for additional information.

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
1.49 1.49 (8AET69WW) 1.36 (8AHT42WW)
1.36 (8XHT42WW)
Current release
1.48 1.48 (8AET68WW) 1.36 (8AHT42WW)
1.36 (8XHT42WW)
8auj29us.exe
8auj29us.txt
1.47 1.47 (8AET67WW)  1.36 (8AHT42WW)
1.36 (8AXT42WW)
8auj28us.exe
8auj28us.txt
1.46 1.46 (8AET66WW) 1.36 (8AHT42WW)
1.36 (8XHT42WW)
8auj27us.exe
8auj27us.txt
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 (8AET55WW) 

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
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Alias Id: MIGR-77001

Last Modified Date: 05 Mar 2020

Original Publish Date: 26 Oct 2016

Document ID: DS018810

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