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   EFI and SMC Updates for Select MacBook Pro and MacBook Air Models

   Agen G. N. Schmitz

   Apple released four firmware updates for select MacBook Pro and MacBook
   Air models released in 2012. The [1]MacBook Pro EFI Firmware Update 2.9
   (4.29 MB) resolves an issue that caused the system to hang during heavy
   processor loads. The [2]MacBook Air EFI Firmware Update 2.5 (4.76 MB)
   fixes an issue where Turbo Boost isn't activated while using Boot Camp,
   as well as ensuring that NetBoot works properly when using an Ethernet
   adapter. The [3]MacBook Pro Retina EFI Update 1.0 (4.97 MB) borrows a
   little from each of these sibling updates, addressing the system hangs
   during processor-intensive use of the former and the NetBoot issue of
   the latter.

   Additionally, the [4]MacBook Air SMC Update 1.7 (658 KB) is a System
   Management Controller that enables Mountain Lion's Power Nap feature
   for MacBook Air models released in late 2010. As always, we recommend
   relying on Software Update to ensure you get the firmware update for
   your specific model. (Free updates)

References

   1. http://support.apple.com/kb/DL1593
   2. http://support.apple.com/kb/DL1592
   3. http://support.apple.com/kb/DL1591
   4. http://support.apple.com/kb/DL1590

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