Software Update Mac High Sierra. Choose Apple menu System Preferences then click Software Update. If your Mac is running OS X Mavericks 109 or later you can upgrade directly to macOS Big Sur.
Click the Update button to download macOS High Sierra. MacOS High Sierra for Mac. For what its worth the Security Update 2020-006 packages were actually released a few days ago but largely went under the radar.
In keeping with Apples release cycle we anticipate macOS 1013 High Sierra will no longer receive security updates starting in January 2021.
If you want an older version of macOS take a look at our article about getting. High Sierra is available here. Click on Software Update. 355GB available storage on macOS Sierra or later Some features require an Apple ID.