How to Update to MacOS Catalina 10.15.4

How to Update to MacOS Catalina 10.15.4

Be sure to back up the Mac before installing any system software update

  1. Go to the  Apple menu, then choose “System Preferences”
  2. Select “Software Update”, and then download and install MacOS Catalina 10.15.4 when available

The Mac will restart to complete installation.

Mac users running on macOS Mojave and High Sierra will instead find “Security Update 2020-002” available to download, along with an update to Safari.

Security Updates for macOS

Direct Download MacOS Catalina 10.15.4 Combo Update & Security Update Package Installers

Mac users can also choose to download a combo update or package installer for macOS Catalina 10.15.4, and for the security update packages for macOS Mojave and MacOS High Sierra. If you’re unfamiliar with using a Combo Update you can learn about that here.


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