How to reverse EFI Firmware update??

Discussion in 'MacBook Pro' started by silbeej, Sep 30, 2007.

  1. silbeej macrumors 6502a

    Feb 3, 2007
    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!!
  2. Habakuk macrumors 6502a

    Jul 10, 2007
    Vienna Austria Europe
    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".
  3. 0007776 Suspended


    Jul 11, 2006
    from that site:
    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.

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