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Update MacBook EFI Firmware if you have 10.8.2

http://reviews.cnet.com/8301-13727_7-57516188-263/macbook-efi-firmware-updates-f ollow-os-x-10.8.2-release/


  • MacBook Air EFI Firmware update 2.5
    This update addresses a problem where the Turbo Boost feature of the Intel chips used in these systems may not work when using Windows in Boot Camp. In addition, it fixes a problems where NetBoot would not work when using an Ethernet adapter.
  • MacBook Pro (non-Retina) EFI Firmware Update 2.9
    This update fixes problems where under high CPU loads, the system may hang and require a forced restart to resume functionality.
  • MacBook Pro Retina EFI Update v1.0
  • As with the non-Retina systems, this update fixes problems where the system may hang under heavy CPU loads, but similar to the MacBook Air it addresses the problem of NetBoot not working when using an Ethernet adapter.

Posted on Sep 20, 2012 4:47 PM

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Posted on Sep 20, 2012 6:13 PM

OK - I have a mid-2012 (MacBookPro 9,1) that I tried to update. I get an alert that:


This software is not supported on your system.


Running 10.8.2 on a 2.7/16/ssd 15" macbook pro.


Any idea why I fail?

12 replies

Nov 2, 2012 11:43 AM in response to rodkov

Okay, I'm going crazy trying to figure this out. I purchased this barely used MacBook Pro, Mid-2012 non-Retina just a few days ago. I was not aware of this firmware update, and the first thing I did was update to Mountain Lion. Now I'm having the hang issue, and I am unable to update the firmware by either running the installer via the App Store or by downloading and running the installer in safe-boot mode. I also attempted to boot from an external USB drive and run the installer but still had no luck. My Boot ROM Version is stuck at MBP91.00D3.B02.

Update MacBook EFI Firmware if you have 10.8.2

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