imac mountain lion thumbnailApple 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

anzio Avatar
109 months ago
This update is for late-2012 Mac systems...

Considering the 15" rMBP was released in mid-2012, I doubt you'll see it.
Score: 2 Votes (Like | Disagree)
MRU Avatar
109 months ago
We've been having terrible trouble since updating one of our iMacs and our Mac Pro to mountain lion with Wifi drop outs continuous throughout the day, bordering on the frustratingly annoying.

I have done every single solution found on the Internet and posted in forums to solve it but nothing has done so. The same macs work perfectly when in Bootcamp so clearly its a software issue.

Judging by the amount of similar posts I've found on here and Apple's support site, its clear ML does some funky **** to wifi. Therefore I was really hopeful when I saw they had released a wifi update and then left with sore nuts after seeing it was for 2012 macs only.

Apples support and attitude for older machines is starting to become very poor. Especially considering I paid over €4k at the time for my MacPro setup, and can't even get software with working wifi from Apple in 2012 :(

As Jim from the Royle Family would say 'professional, my ar5e'....
Score: 1 Votes (Like | Disagree)
QCassidy352 Avatar
109 months ago
Need an update for my 2011 imac's wifi. It's been garbage with mountain lion!
Score: 1 Votes (Like | Disagree)
Matt T Avatar
109 months 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.
Score: 1 Votes (Like | Disagree)

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