Apple Seeds Build 12F13 of OS X Beta 10.8.5 to Developers - MacRumors
Skip to Content

Apple Seeds Build 12F13 of OS X Beta 10.8.5 to Developers

by

As noted by 9to5Mac, Apple has seeded build 12F13 of OS X beta 10.8.5 to developers, one week after releasing the first beta of 10.8.5.

build12f13
The update comes with no known issues and can be downloaded via Apple's Developer Page or through the software update tool in the Mac App Store.

Top Rated Comments

Menge Avatar
166 months ago
802.11ac is not officially supported in 10.8 to begin with. Supported in 10.9.

And the new MacBook Airs are being sold 10.9DP1, then? Because they do support 802.11ac...
Score: 7 Votes (Like | Disagree)
ghostface147 Avatar
166 months ago
Meanwhile over here in Mavericks DP2 land....things are going good.
Score: 5 Votes (Like | Disagree)
Menge Avatar
166 months ago
soundguyami does make a point Menge. Just because we have newer hardware doesn't mean the current OS X will support it. Just as how rMBP were being shipped with 10.7.x even though that edition of OS X was not fully optimized for the retina until Mountain Lion came out a few months later.

What I mean is this timeline:

10.8.4 (no 802.11ac yet) ---> Branch custom build for Airs with 802.11ac ---> merge 802.11ac into mainline for 10.8.5

Maintaining two custom versions of 10.8.5 (one for computers with 802.11ac and one without) makes no sense. It's more work for nothing. They had to have a custom build of 10.8 for the Airs for the launch, but believe me, at the first chance they get, they're gonna merge both branches. It makes sense that 10.8.5 is the merged build.
Score: 4 Votes (Like | Disagree)
MrNomNoms Avatar
166 months ago
No known issues, eh — If this update fixes the blue tinting I'm experiencing now and then when switching from Integrated to Discrete graphics on my 15" mid 2012 MacBook Pro, I'll be a happy little camper.

No issues? I guess this is not where Apple is going to address 802.11ac problems :rolleyes:

A part of me wants to die when I see the above posts; 'no issues' means 'no known regressions' - that is, new problems introduced by the update when compared against the previous release.
Score: 3 Votes (Like | Disagree)
litmag01 Avatar
166 months ago
No known issues, eh — If this update fixes the blue tinting I'm experiencing now and then when switching from Integrated to Discrete graphics on my 15" mid 2012 MacBook Pro, I'll be a happy little camper.

It is a feature, not necessarily a benefit.:)
Score: 1 Votes (Like | Disagree)
166 months ago
No issues? I guess this is not where Apple is going to address 802.11ac problems :rolleyes:

802.11ac is not officially supported in 10.8 to begin with. Supported in 10.9.
Score: 1 Votes (Like | Disagree)

Popular Stories

iOS 26

iOS 26.4 Adds Two New Features to CarPlay

Tuesday March 24, 2026 1:55 pm PDT by
iOS 26.4 was released today, and it includes a couple of new features for CarPlay: an Ambient Music widget and support for voice-based chatbot apps. To update your iPhone 11 or newer to iOS 26.4, open the Settings app and tap on General → Software Update. CarPlay will automatically offer the new features so long as the iPhone connected to your vehicle is running iOS 26.4 or later....
Apple Business hero

Apple Unveils 'Apple Business' All-in-One Platform

Tuesday March 24, 2026 8:53 am PDT by
Apple today announced Apple Business, a new all-in-one platform that unifies device management, productivity tools, and customer outreach features. The service is designed to be a consolidated replacement for several of Apple's existing business-focused offerings, including Apple Business Essentials, Apple Business Manager, and Apple Business Connect. It provides organizations with a single...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 3, AirPods Pro 2 and AirPods 4

Tuesday March 24, 2026 12:31 pm PDT by
Apple today released new firmware for the AirPods Pro 2, AirPods Pro 3, and the AirPods 4. The firmware has a version number of 8B39, up from 8B34 on the AirPods Pro 3, 8B28 on the AirPods Pro 2, and 8B21 on the AirPods 4. There is no word on what's included in the firmware, but Apple has a support document with limited notes. Most updates are limited to bug fixes and performance...