Update Macos High Sierra 10.13.6 To 10.15 | How To

: Includes Find My (which works even if the Mac is offline) and Activation Lock for Macs with the Apple T2 Security Chip.

softwareupdate --list-full-installers softwareupdate --fetch-full-installer --full-installer-version 10.15.7 how to update macos high sierra 10.13.6 to 10.15