Reinstall lion and EFI updates?

Discussion in 'Mac OS X Lion (10.7)' started by itegypt, Oct 30, 2011.

  1. itegypt macrumors 6502

    itegypt

    Joined:
    Aug 6, 2011
    Location:
    US/Q8
    #1
    I understand reinstalling lion will need the 10.7.2 update....etc but does the EFI updates need to be redone over again?

    Thanks
     
  2. iVoid macrumors 65816

    Joined:
    Jan 9, 2007
    #2
    No, EFI, SMC, and other firmware updates only need to be applied once (assuming they are successfully applied).

    And if you use the recovery partition or re-download from the app store, 10.7.2 will be installed (or whatever is current).
     
  3. derpasaurus macrumors newbie

    Joined:
    Apr 28, 2011
    #3
    Is it possible to update the EFI when you reinstall Lion? Or does that occur only once? I tried to install the EFI update manually but it said it wasn't supported.
     
  4. heisenberg123 macrumors 603

    heisenberg123

    Joined:
    Oct 31, 2010
    Location:
    Hamilton, Ontario
    #4
    once EFI is updated its updates its the Firmware on the logic board i believe, so changing hard drives, formating hard drives clean installs of OS X should have no effect on the EFI
     
  5. BarkingGhost macrumors regular

    BarkingGhost

    Joined:
    Oct 18, 2011
    Location:
    Atlanta+35 miles
    #5
    I've reinstalled Lion over the Internet, and also clean-installed it and when I checked system updates afterwards I see updates, but none for EFI. I believe once an EFI update is applied, its there for life.
     
  6. amoralesh macrumors newbie

    Joined:
    Jun 1, 2012
    #6
    EFI 2.7 MBP 13 repeats installation again and again

    I have the same problem.

    Every time I do a Software Update appears the EFI 2.7 to be installed. When a do that said that was successful, but next time appears again as a new upgrade.

    Excuse my bad english. I speak spanish only.
     

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