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   MacBook Air SMC Updates 1.5 and 1.6

   Agen G. N. Schmitz

   Apple has issued two System Management Controller (SMC) updates for the
   MacBook Air ' [1]version 1.5 for models released in June of this year
   and [2]version 1.6 for models released in 2011. Both updates enable
   Power Nap support when running OS X 10.8 Mountain Lion, while the
   version 1.5 update for mid-2012 MacBook Air models also fixes several
   sleep and wake issues that should improve overall stability. Version
   1.6 (for mid-2011 models) requires OS X 10.8, while version 1.5 (for
   mid-2012 models) requires OS X 10.7.4 later. To ensure you get the
   firmware update for your specific model, we recommend relying on
   Software Update. (Free, 698 KB/663 KB)

References

   1. http://support.apple.com/kb/DL1558
   2. http://support.apple.com/kb/DL1560