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Apple Releases 'Mac Wi-Fi Update 1.0' to Fix 5GHz Wi-Fi Issue

Apple has released an update for recently released Mac systems that improves compatibility when using 5GHz Wi-Fi frequencies. The update is recommended for all "late 2012" Macs.

Mac Wi-Fi Update 1.0 can be downloaded from Apple's support site or through the Mac App Store on affected Macs.
About Mac Wi-Fi Update 1.0

This update is recommended for all late 2012 Mac systems. This 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

Top Rated Comments

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23 weeks ago
This update is for late-2012 Mac systems...

Considering the 15" rMBP was released in mid-2012, I doubt you'll see it.
Rating: 2 Positives
23 weeks ago
What about the 2011 models, Apple? My iMac can't stay connected to a 5GHz network for more than a few minutes and then can't even find them.
Rating: 1 Positives
23 weeks ago
Need an update for my 2011 imac's wifi. It's been garbage with mountain lion!
Rating: 1 Positives

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