Installing OS X 10.8 on an Unsupported Mac

Apple announced Mountain Lion's availability, July 25, 2012. iOS 9.2 and iOS 9.2.1 require Mac OS X 10.8 and iTunes 12.3 (newer versions of iOS require newer Mac OS X for syncing, and are covered in that link) for syncing on the Macintosh side.

Download the latest version of OS X Mountain Lion for Mac for free. Read 203 user reviews and compare with similar apps on MacUpdate.

建議所有的 OS X Mountain Lion 的使用者都安裝 10.8.5 更新，它改進了 Mac 的穩定性

Mac OS X 10.8 Mountain Lion 適用於與最新版 macOS 不相容的舊型系統.

The 10.8.5 update is recommended for all OS X Mountain Lion users and improves the stability, compatibility, and security of your Mac.

Upgrading from OS X Lion to Mountain Lion is a relatively straightforward process, but it requires careful preparation. By backing up your data, ensuring compatibility, and following the steps outlined in this guide, you can enhance your Mac’s perfo