EFI Firmware upgrade questions

Discussion in 'macOS' started by louis731, Sep 27, 2009.

  1. louis731 macrumors newbie

    Sep 23, 2009
    Im planning to upgrade the firmware on my MBP.

    One concern I have is, is EFI firmware universally safe to run on all MBP models?

    And, is a firmware update include all changes in the previous version of updates? Or, on the other hand, should I install the update one version after another until it's full up to date?

  2. larkost macrumors 6502a

    Oct 13, 2007
    Use Software Update to get the proper EFI updaters for a computer. I believe they will only update the computers that they are designed for. And within that parameter you should be safe, and will only need the single updater.
  3. gr8tfly macrumors 603


    Oct 29, 2006
    ~119W 34N

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