Previous 1 3 4 5 6 7 Next 172 Replies Latest reply: Jun 22, 2015 5:48 AM by Loner T Go to original post Branched to a new discussion.
  • Loner T Level 6 (17,708 points)

    It may not be in the App Store, but it is still available at the direct link as posted earlier. Will keep an eye on it. The embedded scripts have omitted the SMC resets and the machine becomes alive, after time outs which are pretty long. badabing_qc's decision to 'unbrick' worked. Apple should have tested better.


    In most cases, the very soft fan noise is indicative that the hardware is up, but just waiting for a timer to expire.

  • Mathinus Level 1 (0 points)

    I had the same problems as reported earlier. EFI update showed up on the App Store, after installing it I had the fear that my MacBook Air was bricked because I couldn't start it up. At some point it just restarted. The Update showed up again in the AppStore... Firmware is still the same as before.

    Firmware Update and the MacBook Air EFI Firmware Update 2.9 link got removed now.

  • jecdk Level 1 (10 points)

    The link is still here:



  • jason kessel Level 1 (115 points)

    I never got a call from an Apple Engineer after rescheduling. No point now since the upgrade was taken down. Clearly Apple knows they screwed the pooch on this one.

  • Loner T Level 6 (17,708 points)

    The Apple engineers already knew, but should have had the courtesy to call you back with... 'Yes, we know about the firmware issue..." line.

  • jason kessel Level 1 (115 points)

    I won't argue with that. Customer service fail on Apple's part for sure.

  • rozalie_m Level 1 (0 points)

    Since the firmware update 2.9 I'm having several issues.


    • Computer is running very hot
    • Battery charger is very hot
    • MBA won't automatically detect known Wifi networks
  • Mathinus Level 1 (0 points)

    Sorry, you are right. Thanks for the information!

    Only the link pointing there from this discussion (shown under related articles) is dead.

  • Loner T Level 6 (17,708 points)

    The exact problems the firmware update is supposed to fix. From


    "This update is recommended for MacBook Air (Mid 2011) models.  This update addresses an issue where systems may take longer to wake from sleep than expected and fixes a rare issue that may cause fans to run at full speed after waking from sleep."

  • rozalie_m Level 1 (0 points)

    I don't really understand your reply, Loner.

  • Loner T Level 6 (17,708 points)

    Apologies, but what I am saying is that the update is supposed to address the 'full speed' fans and 'wake and sleep' issues (which also impacts the wifi radio and hence the wifi connectivity). Instead it has made your situation worse than on the older version of the firmware.


    If you have AppleCare and have an Apple Store close by, I would recommend a trip and have a Genius look at your MBAir. You can certainly get a free diagnosis, if you do not have coverage.


    Reverting to the older version is  not officially supported, as noted in About the Firmware Restoration CD (Intel-based Macs).

    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.

  • EdisonW Level 1 (15 points)

    Hello Loner T,


    I've just gotten off the phone with Apple L2 Support, and they have confirmed they've identified the issue, and as of right now, the update has been pulled from both the App Store Software Updates and the Apple Support downloads section.


    Apparently they believe the wrong EFI may have been packaged and tagged for the 2011 models, but they couldn't confirm that 100%. Engineering is working on a replacement EFI and will post it when it's ready soon.

  • Loner T Level 6 (17,708 points)

    Thank you. If that is the case, I would not recommend doing the SMC-reset-3-times procedure, but continue running with the old firmware till an updated version is available from Apple. (It is still available here though - This should also be removed. Let the L2 folks at Apple know, if you talk to them again).


    rozalie_m is running into issues with the updated version, and I think others also will.

    To quote Jason's post  - "Clearly Apple knows they screwed the pooch on this one."

  • EdisonW Level 1 (15 points)

    Yeah that does seem to be the case, as Apple admitted to it on the call.


    Hopefully they'll re-release EFI 2.9 in short order and get those people like rozalie_m straightened out.


    As the MBA I have on my desk seems to be purring along just fine now, I won't go for the SMC x3 reset procedure. I'll just get it setup for the owner and hand it back, and we'll look at the EFI update when the time comes.



  • Ryan London UK Level 1 (0 points)

    I just found this thread through this article ith-latest-macbook-air-efi-update


    I installed the update yesterday or the day before. It failed to install properly and crashed my MacBook. Stupidly, I tried to install the update 3 more times as I did not realise that there was a known issue with this update.


    Although I think I may have a mid 2012 model or it could be a 2011 model. Not 100 per cent sure. Anyway, after the update I was able to start my MacBook. However, since then I have noticed that my MacBook has been crashing constantly. It crashes doing some very basic stuff.


    I am really angry with Apple with all the updates. I used to a Microsoft Windows user many years ago. I remember Microsoft Windows had a notorious reputation for constantly releasing updates which would often ruin peoples computers. I am finding the same is now becoming true of Apple. Apple now release updates on a regular basis. And none seem to really benefit my Mac that much.

Previous 1 3 4 5 6 7 Next