Apple has pushed out the second major software update for OS X 10.8 Mountain Lion to their registered and select Mac developers. The bump to version OS X 10.8.2 build number 12C31a brings Facebook, iMessage phone number merging. The combo update clocks in at a svelte 642 MB download direct from Apple’s developer website. You can install the OS X Mountain Lion 10.8.2 Update (Combo) on OS X Mountain Lion 10.8 build 12A269 GM or 10.8.1 build 12B17 or later build.
With no known issues so far, Apple has urged the developers to focus on Facebook, Messages, GameCenter, and Reminders. Interestingly, Apple released the first maintenance update of OS X Mountain Lion (10.8.1) publicly earlier today addressing pertinent problems with Thunderbolt audio noise and Mail accounts not working, among other issues.
Since it is a developer build (not bug free, of course), be sure to take precautionary steps against the chance of something going nasty while updating your machine to version OS X 10.8.2 12C31a. Don’t forget to backup your system fully using either Time Machine or a system cloning tool.
To download Lion 10.8.2 (build 12C31a) software update, visit the Apple’s site (follow link at the bottom) or via the Software update method that route users to the Mac App Store for updates. If you have system notifications enabled for the App Store, you should get a notice about the software update, offering you the option to directly install the 10.8.2 update. If you haven’t installed the public version yet, do so now. The OS is available through the Mac App Store as an upgrade to Lion or Snow Leopard users for $19.99, but be warned, the size of the download file is 4.3GB
Note: The developer build of OS X 10.8.2 Mountain Lion (build 12C31a) can only be downloaded by Mac Developer Program members by visiting Apple’sMacDevCenter. A paid developer account ($99 per year) is required to download the bits.