How to reverse EFI Firmware update??

[silbeej]

I just updated teh MBP firmware, and now the cpu runs 10-15 degrees C hotter, and the cpu whine is back. Can i reverse the firmware to what it was before??

PLease help!!

 

[Habakuk]

Firmware Restoration CD 1.4

Although there is written

Note: This CD cannot be used to return an Intel-based Macintosh computer's firmware to a previous version if a successful update has already been performed.

I would give it a try. Maybe your update was "unsuccessful".

 

[0007776]

Firmware Restoration CD 1.4

from that site:

Note: This CD cannot be used to return an Intel-based Macintosh computer's firmware to a previous version if a successful update has already been performed.

I'm not sure if there is a way to do it but that CD does not look like it will work for what you are wanting.