how to update macos high sierra 10136 to 1015

How To Update Macos High Sierra 10136 To 1015

Since Catalina is an older version of macOS, it may not show up in your regular "Software Update" pane in System Preferences. JustAnswer

The install may take 30–90 minutes. Do not close the lid or turn off your Mac. how to update macos high sierra 10136 to 1015

Once the download is complete, the installer will open automatically. Click and follow the on-screen instructions. Agree to the software license terms. Since Catalina is an older version of macOS,

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