How To Software Update Your Macbook. 2 Manage your software update preferences. If any updates are available click the Update Now button to install them.
Choose Apple menu on your Mac then choose System Preferences. After your Mac has found the latest update click Update Now. Click on the Apple menu in the upper left hand corner and then select the Software Update menu option.
Click Upgrade Now and follow the onscreen instructions.
Use Software Update to find and install updates for macOS built-in apps like Safari and apps downloaded from the App Store. Check Your Mac Compatibility. Select Continue to keep on going and obey the instructions being given on screen. After your Mac has found the latest update click Update Now.