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Level 1

8 points

how do i update my MAC OS bigSur 11.6.7 to 15.6.1

How do I update my MAC from MAC OS bigsur 11.6.7 to 15.6.1

iMac 21.5″, macOS 11.6

Posted on Aug 19, 2022 3:07 PM

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Level 10

471,735 points

Posted on Aug 19, 2022 3:28 PM

The model year of an iMac is available at Apple menu > About This Mac.

A mid 2014 and late 2014 can be upgraded to the latest version of Big Sur macOS 11 but no later. See: How to get old versions of macOS - Apple Support

A late 2015 or later can be upgraded to the current version of Monterey macOS 12. See: How to upgrade to macOS Monterey - Apple Support

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