Downgrading MacBook Pro EFI firmware?

Discussion in 'MacBook Pro' started by loccie, Aug 7, 2009.

  1. loccie macrumors newbie

    loccie

    Joined:
    Mar 6, 2009
    #1
  2. Bill Gates macrumors 68020

    Bill Gates

    Joined:
    Jun 21, 2006
    Location:
    127.0.0.1
    #2
    It is not possible to downgrade the firmware.
     
  3. loccie thread starter macrumors newbie

    loccie

    Joined:
    Mar 6, 2009
    #3
    Where do you have this information from? Surely folks at Apple store must have some proprietary tools to do that. "It is just software!" :)
     
  4. Bill Gates macrumors 68020

    Bill Gates

    Joined:
    Jun 21, 2006
    Location:
    127.0.0.1
    #4
    I'm not aware of any 3rd-party flashing utilities, and you would also need an original image of the firmware you're MBP shipped with. The one you linked to is not for your model. May I ask why you seek to downgrade your firmware?
     
  5. jjahshik32 macrumors 603

    Joined:
    Sep 4, 2006
    #5
    You cant downgrade. I have a feeling you updated your firmware to 1.7 to resolve an sata-II support issue but you cant use your 3rd party hdd because it keeps freezing on your 15"/13" mbp?

    This is why I returned my 15" 2.8GHz mbp 2 weeks ago and picked up the 17" which doesnt have this issue. :)
     
  6. loccie thread starter macrumors newbie

    loccie

    Joined:
    Mar 6, 2009
    #6
    I am having problems with me UB MBP 17" recognizing G.Skill SSD drive installed in MCETech optibay in place of DVD drive. Mac OS X installer just doesn't see it although Mac OS X installed on the factory Apple SSD sees it just fine after booting.
     

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