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

NameOperating SystemVersionReleasedDownload
BIOS Update Utility
8cuj18us.exe
5.49 MB
Windows 7 32bit,
Windows 7 64bit,
Windows 8 32bit,
Windows 8 64bit,
Windows Vista 32bit,
Windows Vista 64bit,
Windows XP
1.3804 Aug 2013 Download
README for BIOS Update Utility
8cuj18us.txt
22 KB
Windows 7 32bit,
Windows 7 64bit,
Windows 8 32bit,
Windows 8 64bit,
Windows Vista 32bit,
Windows Vista 64bit,
Windows XP
1.3804 Aug 2013 Download

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


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