Frustrating upgrade

I have an older iMac running macOS Sierra v10.12.6 and I want to upgrade it as far as possible at least to v10.13. Every download I attempt to install keeps telling me I need a different version. What exact steps, including links to each upgrade if possible, are required to perform the desired upgrade?

iMac 27″, macOS 11.0

Posted on Dec 20, 2020 1:35 PM

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Posted on Dec 20, 2020 2:21 PM

Check: How to get old versions of macOS - Apple Support

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Frustrating upgrade

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