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iMac (Retina 5K, 27-inch, Mid 2015) os upgrade

i want to upgrade os. What is recommended? Thank you.

Posted on Jun 12, 2021 11:59 PM

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Level 10

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Posted on Jun 13, 2021 12:34 AM

Big Sur.

How to upgrade to macOS Big Sur - Apple Support

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Level 10

122,903 points

Jun 13, 2021 12:34 AM in response to Michelle Parker-Rock

Big Sur.

How to upgrade to macOS Big Sur - Apple Support

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iMac (Retina 5K, 27-inch, Mid 2015) os upgrade

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