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 W520

BIOS Update Utility for Windows 8 (32-bit, 64-bit), 7 (32-bit, 64-bit), Vista (32-bit, 64-bit), XP - ThinkPad W520

In This Article
Compatible 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 W520

6.445 MB
1.46

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)

Windows XP (64-bit)

26 Jun 2018
Critical

BIOS Update Utility

8buj25us.exe

6.42 MB
1.46

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)

Windows XP (64-bit)

26 Jun 2018
Critical

README for BIOS Update Utility

8buj25us.txt

25.7 KB
1.46

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)

Windows XP (64-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.- ThinkPad W520

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:

Supported ThinkPad system

  • W520

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-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)
Package UEFI BIOS ECP Release
1.46 1.46 (8BET65WW) 1.36 (8AHT42WW)
1.36 (8XHT42WW)
Current release
1.45 1.45 (8BET65WW) 1.36 (8AHT42WW)
1.36 (8XHT42WW)
8buj24us.exe
8buj24us.txt
1.44 1.44 (8BET64WW) 1.36 (8AHT42WW)
1.36 (8XHT42WW)
8buj23us.exe
8buj23us.txt
1.43 1.43 (8BET63WW) 1.36 (8AHT42WW)
1.36 (8XHT42WW)
8buj22us.exe
8buj22us.txt
1.42 1.42 (8BET62WW) 1.36 (8AHT42WW)
1.36 (8XHT42WW)
8buj21us.exe
8buj21us.txt
1.41 1.41 (8BET61WW)  1.36 (8AHT42WW) 8buj20us.exe
8buj20us.txt
1.40 1.40 (8BET60WW)  1.36 (8AHT42WW) 8buj19us.exe
8buj19us.txt
1.39-1.35 1.39 (8BET59WW) 1.35 (8AHT41WW)
1.35 (8XHT41WW)
8buj18us.exe
8buj18us.txt
1.39-1.35 1.39 (8BET59WW) 1.35 (8AHT41WW)
1.35 (8XHT41WW)
8buj18us.exe
8buj18us.txt
1.39 1.39 (8BUJ17US) 1.34 (8AHT40WW)
1.34 (8XHT40WW)
8buj17us.exe
8buj17us.txt
1.38 1.38 (8BET58WW)  1.34 (8AHT40WW)
1.34 (8XHT40WW)
8buj16us.exe
8buj16us.txt
1.37 1.37 (8BET57WW) 1.33 (8AHT39WW)
1.33 (8XHT39WW)
8buj15us.exe
8buj15us.txt
1.36 1.36 (8BET56WW) 1.20 (8AHT38WW)
1.20 (8XHT38WW)
8buj14us.exe
8buj14us.txt
1.35 1.35 (8BET55WW) 1.20 (8AHT38WW)
1.20 (8XHT38WW)
8buj13us.exe
8buj13us.txt
1.34 1.34 (8BET54WW) 1.19 (8AHT37WW)
1.19 (8XHT37WW)
8buj12us.exe
8buj12us.txt
1.33 1.33 (8BET53WW) 1.19 (8AHT37WW)
1.19 (8XHT37WW)
8buj11us.exe
8buj11us.txt
1.32 1.32 (8BET52WW) 1.18 (8AHT36WW)
1.18 (8XHT36WW)
8buj10us.exe
8buj10us.txt
1.30 1.30 (8BET50WW) 1.17 (8AHT35WW)
1.17 (8XHT35WW)
8buj09us.exe
8buj09us.txt
1.28 1.28 (8BET48WW) 1.17 (8AHT35WW)
1.17 (8XHT35WW)
8buj08us.exe
8buj08us.txt
1.26 1.26 (8BET46WW) 1.16 (8AHT34WW)
1.16 (8XHT34WW)
8buj06us.exe
8buj06us.txt
1.25 1.25 (8BET45WW) 1.15 (8AHT33WW)
1.15 (8XHT33WW)
8buj05us.exe
8buj05us.txt
1.25 1.25 (8BET44WW) 1.14 (8AHT32WW) 8buj04us.exe
8buj04us.txt
1.22 1.22 (8BET42WW) 1.13 (8AHT31WW) 8buj03us.exe
8buj03us.txt
1.21 1.21 (8BET41WW) 1.09 (8AHT27WW) 8buj02us.exe
8buj02us.txt
1.06 1.06 (8BET30WW) 1.06 (8AHT24WW) 8buj01us.exe
8buj01us.txt

 

Was this information helpful?

Your feedback helps to improve the overall experience

Alias Id: MIGR-77033

Last Modified Date: 05 Mar 2020

Original Publish Date: 07 Nov 2016

Document ID: DS018884

Feedback