More ways to shop: Visit an Apple Store, call 1-800-MY-APPLE, or find a reseller. New technologies at the heart of the system make your Mac more reliable, capable, and responsive — and lay the foundation for future innovations. MacOS High Sierra also refines the features and apps you use every day. Use the App Store to update the Mac operating system and any. Then use the Update buttons to download and. Get OS X updates by choosing Software.
The OS X Lion v10.7.5 up-date consists of Gatekeeper, a safety feature which helps you maintain your Mac safe from malicious software.