BIOS Update for Windows 7 (32-bit), Windows Vista (32-bit)-Lenovo G450, G550

NameOperating SystemVersionReleasedDownload
BIOS Update
x32 18CN44WW (V2.53).exe
2.38MB
Windows Vista 32bit,
Windows 7 32bit
4430 Apr 2010 Download
BIOS Update
18CN44WW.txt
2.38MB
Windows 7 32bit,
Windows Vista 32bit,
Windows 7 64bit,
Windows Vista 64bit
4430 Apr 2010 Download

Important information

Lenovo strongly suggests rebooting the system before applying the BIOS update.


Fixes and enhancements

1. Modified fan switch-on function on VGA (60).
2. Disabled Low Battery Alarm function.
3. Added Realtek LAN support.
4. Fixed hang issue on Windows bar.


Change history

18CN44WW(V2.53):
1. Fixed hang issue on Windows bar.

18CN43WW(V2.52):
1. Added Realtek LAN support.

18CN42WW(V2.51):
1. Modified fan switch-on function on VGA (60).
2. Disabled Low Battery Alarm function.


Installation instructions

Take X32 18CN44WW(V2.53).exe as example.
1. Locate the file X32 18CN44WW(V2.53).exe that has been downloaded.
2. Double click the X32 18CN44WW(V2.53).exe icon. For Vista and Windows 7, you may run it as administrator by left-clicking on the icon and selecting "Run as administrator".
3. Click install
4. Click flash bios
5. Press Enter to start flashing. During the process, you are advised not to turn off the computer.
6. When the update finishes, the computer will automatically reboot for the changes to take effect.