New BIOS update for T400's with Switchable Graphics

[vinuneuro]

Do not install this update. It made random pixels all over the screen lighter than others. I've gone back to 3.18.

Lenovo Support & downloads - BIOS update utility - ThinkPad R400, T400

Version 3.19
BIOS: 3.19 / ECP: 1.06

* (Fix) Fixed an issue where the LCD screen might be wavy (The discrete graphic models only).
* (Fix) Fixed an issue where the computer might not boot when McAfee Endpoint Encryption was installed.

[bill bolton]

Do not install this update.

It has been working just fine for me, for a couple of weeks now.

Cheers,

Bill B.

[spooky99]

I have a problem you mentioned but I couldn't find the way to go back to previous version.
Would you let me know the way to go back to previous version?

[vinuneuro]

Bill, maybe it's screen dependent. I've got an LG led backlit screen.

spooky, older versions are the bottom of the BIOS page:

http://www-307.ibm.com/pc/support/site. ... MIGR-70350

[LegendaryKA8]

I'm not sure about that. I'm running that BIOS version on my T400(which I recently refitted the LG WXGA+ LED display to) with no issues whatsoever.

However, I'm disappointed that they still haven't released the updated Win7 driver for switchable graphics. :/