Does the Yosemite installer install an EFI update?

Discussion in 'OS X Yosemite (10.10)' started by zorinlynx, Jul 30, 2014.

  1. zorinlynx macrumors 601

    zorinlynx

    Joined:
    May 31, 2007
    Location:
    Florida, USA
    #1
    I installed Yosemite Beta on a 13" 2013 rMBP and during the install process it rebooted with an unusual progress bar and the fans spun up to full speed for a few seconds.

    This normally happens during an EFI firmware update!

    Why would Yosemite install an EFI firmware update, and if one was needed, how come it hasn't been released for systems running Mavericks as well?
     
  2. Intell macrumors P6

    Intell

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    Jan 24, 2010
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    Inside
  3. zorinlynx thread starter macrumors 601

    zorinlynx

    Joined:
    May 31, 2007
    Location:
    Florida, USA
    #3
    So then what was that unusual progress bar I only saw once, with the fans blowing full speed? Any ideas?
     
  4. bbfc macrumors 68030

    bbfc

    Joined:
    Oct 22, 2011
    Location:
    Newcastle Great Park, England.
    #4
    The Yosemite boot screen includes a progress bar now, is that what you saw?
     
  5. treichert macrumors 6502

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    Nov 7, 2007
    Location:
    Aachen, Germany
    #5
    Yes, it does so for several Macs.
     
  6. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #6
    Yes, the Yosemite installer does include EFI updates for some models. Someone posted a screenshot earlier of the files inside the installer, but I can't find the post right now.

    Just a guess, but maybe it has to do with Handoff and Continuity that is not available on Mavericks.
     
  7. simon48 macrumors 65816

    simon48

    Joined:
    Sep 1, 2010
    #7
    I had one too on my late 2013 15" rMBP. So it looks like some if not all the 2013 rMBPs got one.
     

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