Updating App Store Apps and System Software Enabling Automatic Updates Updating Apps Installed Without the App Store Upgrading to a Newer OS X Version Installing Updates in Legacy OS X Versions Community Q&A Software updates keep your computer and programs secure, fix errors, and provide new features.
Many apps that you install will get regular updates that can improve functionality.
Requires a Face Time or i Sight camera (built in or external), or USB video class (UVC) camera.
At other times, the system may not boot at all and show a blank screen even though the fans are spinning.
Apple also releases system updates that keep your Mac secure and stable.
When a new major version of OS X is released, you can download the upgrade for free from the App Store.
Learn more about how to upgrade to If you’re running Snow Leopard (10.6.8) or Lion (10.7) and your Mac supports mac OS High Sierra, you will need to upgrade to El Capitan first. If you’re running Leopard and would like to upgrade to mac OS High Sierra, first you’ll need to upgrade to OS X Snow Leopard.
You can purchase OS X Snow Leopard from the Apple Online Store. Requires a Multi-Touch trackpad, Force Touch trackpad, Magic Trackpad, or Magic Mouse.