my macbook air says no available updates so I can't update to 10.14.6
my macbook air says no available updates so I can't update to 10.14.6
MacBook Air 13″, macOS 10.13
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To learn how to update macOS, please read Keep your Mac up to date.
To learn how to upgrade macOS to the latest version, please read How to upgrade to macOS Catalina. It includes instructions for upgrading to macOS "Mojave" if that is what you require.