How To Update Macos High Sierra 10136 To 1015 [better] Jun 2026

macOS Catalina supports the following Mac models (and removes support for some older models that worked with High Sierra):

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You can skip Mojave entirely – the Catalina installer works directly from High Sierra. how to update macos high sierra 10136 to 1015

Try each app you rely on:

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Upgrading from macOS High Sierra 10.13.6 to macOS Catalina 10.15 is a direct process for supported hardware. You do not need to install macOS Mojave as an intermediate step unless your Mac model requires a firmware update typically included in Mojave. macOS - How to Upgrade - Apple (SI) macOS Catalina supports the following Mac models (and