Apple today released OS X Mountain Lion 10.8.1 (build 12B19) to Mac developers fixing bugs in Migration Assistant, Exchange, and iMessage in addition to stability improvements over its predecessor build 12B17 released a week ago. The disk image required to perform a delta update to OS X 10.8.1 build 12B19 is only 24.2MB in size.
To download Lion 10.8.1 (build 12B19) update, head over to 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 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
This update includes general operating system fixes that improve the stability and compatibility of your Mac, including fixes that:
- Resolve an issue that may cause Migration Assistant to unexpectedly quit
- Improve compatibility when connecting to a Microsoft Exchange server in Mail
- Address an issue playing audio through a Thunderbolt display
- Resolve an issue that could prevent iMessages from being sent
- Address an issue that could cause the system to become unresponsive when using Pinyin input
- Resolve an issue when connecting to SMB servers with long names
- Address a issue that may prevent Safari from launching when using a Proxy Automatic Configuration (PAC) file
- Improve 802.1X authentication with Active Directory credentials.
Note: The developer build of OS X 10.8 Mountain Lion (build 12B19) can only be downloaded by Mac Developer Program members by visiting Apple’sMacDevCenter. A paid developer account is required to download the bits.
Download Mac OS X Mountain Lion 10.8.1 – [Build 12B19]