SL400 BIOS Downgrade? Laptop will not disable correctly.

Is it possible to downgrade the BIOS?

Having some problems with the latest 1.24.

Basically the SL400 shut down (shutdown, sleep or Hibernate). It executes a restart instead of a shutdown. Excluded bone (tried with a bootable Acronis Recovery OS install with no update floppy), seeks essentially to hardware or BIOS.

The Readme for the BIOS indicates you can't downgrade.
http://www-307.IBM.com/PC/support/site.WSS/document.do?lndocid=MIGR-70040

I was wondering if there is a way to downgrade the BIOS which is the only day I can not cancel, do a clean install. Open a ticket with Technical Support, but they said it was a corrupt registry setting and I have to reboot the installation but that did not work.

TIA...

I have had no trouble to decommissioning of 1.23 to 1.12 using the ISO bootable.

Tags: ThinkPad Notebooks

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