There are so many reasons to upgrade to macOS High Sierra now. You get access to new technologies that make your Mac more reliable, capable, and responsive. Upgrading ensures that you get the latest security enhancements. And refinements to the features and apps you use every day. read more
macOS High Sierra Your Mac. Elevated. 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. read more
From the Apple ( ) menu in the corner of your screen, choose About This Mac. The version of your operating system appears beneath “macOS” or “OS X” in the window that opens. If you need to know the build, click the version. read more
Use the App Store to update the Mac operating system and any apps you got from the App Store. To check for Mac software updates, open the App Store app on your Mac. Click Updates in the App Store toolbar, then use the Update buttons to download and install any updates listed. read more