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The Mac Wi-Fi Update improves compatibility when using the 5GHz band in Wi-Fi.

Boot ROM or SMC Version Information: To confirm the update has been applied, the CFBundleVersion string of the AirPortBrcm4311.kext will need to be checked.

New driver delivered in update: AirPortBrcm4331.kext CFBundleVersion = 612.20.15

/System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AirPortBrcm4331.kext/Contents/Info.plist

Requirements

  • OS X 10.8.2 or later
  • Late 2012 Mac

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Mac Wi-Fi Update User Discussion

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Mmueck Member IconComment+180
Mmueck
+0

I jumped for joy when I saw this - the instant I upgraded my 15" retina MacBook Pro to Mountain Lion my WiFi turned totally unreliable and I've been cursing Apple ever since. There are a LOT of people complaining about it in Apple's forums. Anyway, despite the image of a retina MacBook Pro MacUpdate is showing beside this update, it is NOT applicable for the 15" model apparently :-(. Presumably it's just the 13" model, or if not then the picture shouldn't show a retina MacBook Pro at all. Oh well, back to my cursing...

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Nontroppo
+1

Try turning off bluetooth, my rMBP has significant interference between 2.4Ghz wi-fi and bluetooth, I found disabling bluetooth or forcing only 5Ghz access points the fix for me...

MacUpdate---Ryan
+0

Thanks for clarifying that the 15" rMBP isn't supported, Apple tends to be a bit ambiguous in their Knowledge Base articles. I presume it's just the 13" Retina and new iMacs that this update applies to and so I've updated our requirements and screenshots to make things a bit clearer :)

Janichsan
+0

I thought it was obvious that this update is not for the 15" rMBP: he picture shows a 13" rMBP (compare to http://www.apple.com/macbook-pro/ ) and the latest 15" MacBooks are "mid 2012" models.

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Details

Downloads 1,315
Version Downloads 1,315
Type Utilities / System
License Free
Date 17 Dec 2012
Platform Intel 64 / OS X
Price Free
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