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How to upgrade my 2010 iMac 27 in?

My iMac has macOS has High Sierra 10.13.6. Can this be updated?

iMac 27″, macOS 10.13

Posted on Sep 28, 2023 8:45 AM

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Question marked as Top-ranking reply

Posted on Sep 28, 2023 8:47 AM

Sorry, no, High Sierra 10.13.6 is the latest possible.

Also see the the following from Identify your iMac model - Apple Support


iMac (27-inch, Mid 2010)

Model Identifier: iMac11,3

Part Number: MC510xx/A, MC511xx/A

Newest compatible operating system: macOS High Sierra

3 replies

Sep 28, 2023 6:55 PM in response to Csummer23

You can't update the version of macOS on that machine any further.


If you don't already have Firefox, you might want to consider downloading and installing Firefox 115 ESR. It's not getting any feature updates, but Mozilla says they will provide critical security updates until September 2024.


https://support.mozilla.org/en-US/kb/firefox-users-macos-1012-1013-1014-moving-to-extended-support

How to upgrade my 2010 iMac 27 in?

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