You can find out which version of OS X you have by clicking the Apple icon. Mavericks is also available from the Mac Dev Center by redeeming a code that can be used in the Mac App Store to download the software. To update your mac OS X, go to the website and click Upgrade now. The exact launch date of OS X 10.8.5 is unknown, while OS X 10.9 Mavericks is scheduled to debut this fall. A bootable ISO or bootable USB can be made directly from the InstallESD.dmg disk image found under Contents/SharedSupport/. Un-archive the zip archive and you will get the app Installer. Install OS X 10.8.5 Mountain (4.16 GB) Choose free or premium download. For application development purposes, Xcode 4.4 or later is required.Īpple is developing this new version of OS X Mountain Lion in tandem with a brand new version of its desktop operating system called OS X Mavericks.ĭevelopers have been handed OS X Mavericks Developer Preview 3 (Build 13A510d) earlier this week with numerous documented fixes, as well as several known issues that need addressing. Both versions 10.8.4 AND 10.8.5 full installers included (zipped). The computer needs to pack at least 8GB of free disk space. OS X Mountain Lion 10.8.5 Build 12F20 (Pre-Release) is “a pre-release update to OS X Mountain Lion 10.8 and includes a combo update, delta update, and seed note,” Apple tells developers in its email invitation to download and test the software.ĭevelopers can either visit the Mac Dev Center to download the DMG manually, or they can use the Mac App Store’s Software Update tool to increment an existing beta build running on their test machines.īefore downloading OS X Mountain Lion for the first time, testers must ensure they are using a 64-bit, Intel-based Mac running either Mac OS X v10.6.7 Snow Leopard or OS X Lion. Audio & Video tools downloads - OBS by Open Broadcaster Software and many more programs are available for instant and free download. Available as a free download to registrants of the annual Apple developer program, the seed has no known issues.Īpple continues to ask testers to focus their coding efforts on five key areas of the operating system: Wi-Fi, Graphics, Wake from Sleep, PDF Viewing and Accessibility, as well as Mobile Device Management. The fourth beta of OS X 10.8.5 Mountain Lion is out on the Apple Dev Center.

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