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upgrade macOS high sierra

is it possible to upgrade macOS High Sierra (21.5-inch, Late 2009)?

iMac, macOS 10.13

Posted on Aug 28, 2021 2:43 PM

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Posted on Aug 28, 2021 3:09 PM

A late-2009 iMac can be upgraded to High Sierra 10.13.6 but no later version.

See the following from: Identify your iMac model - Apple Support


iMac (21.5-inch, Late 2009)

Model Identifier: iMac10,1

Part Number: MB950xx/A, MC413xx/A

Latest compatible operating system: macOS High Sierra 10.13.6

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upgrade macOS high sierra

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