won't update os

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Level 1

8 points

how do I update my mac it will not update from High sierra

iMac 27″, macOS 10.13

Posted on Feb 20, 2021 06:42 PM

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Answer 1

Top-ranking reply

Level 10

100,285 points

Sorry to report High Sierra is the last macOS available for this unit

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Answer 2

Level 4

2,677 points

Welcome, erins435, to Apple Support Communities!

What year was your iMac 27″ model released?

Please provide the Model and Sub-Model, from the About this Mac panel:

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Answer 3

Level 1

8 points

mid 2011, and per apple it is non supported

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