newest version of macOS for 2009 imac
Can I download a newer version of macOS past High Sierra for my late 2009 iMac?
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You can continue to find trusted guidance and support on the official Apple Support site.
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The Apple Support Community will permanently close on November 20, 2026. Starting today, the site will no longer accept new posts and is available in a read-only state.
You can continue to find trusted guidance and support on the official Apple Support site.
We want to thank the community members who have contributed their time and expertise to help others with their Apple products.
Can I download a newer version of macOS past High Sierra for my late 2009 iMac?
Sorry, no. See the following from Identify your iMac - Apple Support
iMac (27-inch, Late 2009)
Model Identifier: iMac10,1
Part Number: MB952xx/A, MB953xx/A
Newest compatible operating system: macOS High Sierra
Tech Specs: iMac (27-inch, Late 2009)
User Guide: iMac (27-inch, Late 2009)
iMac (21.5-inch, Late 2009)
Model Identifier: iMac10,1
Part Number: MB950xx/A, MC413xx/A
Newest compatible operating system: macOS High Sierra
Tech Specs: iMac (21.5-inch, Late 2009)
User Guide: iMac (21.5-inch, Late 2009)
Sorry, no. See the following from Identify your iMac - Apple Support
iMac (27-inch, Late 2009)
Model Identifier: iMac10,1
Part Number: MB952xx/A, MB953xx/A
Newest compatible operating system: macOS High Sierra
Tech Specs: iMac (27-inch, Late 2009)
User Guide: iMac (27-inch, Late 2009)
iMac (21.5-inch, Late 2009)
Model Identifier: iMac10,1
Part Number: MB950xx/A, MC413xx/A
Newest compatible operating system: macOS High Sierra
Tech Specs: iMac (21.5-inch, Late 2009)
User Guide: iMac (21.5-inch, Late 2009)
No, the most up-to-date macOS supported by iMac 2009 is High Sierra. If you don't like, downgrade to El Capitan, which is still a big favorite.
newest version of macOS for 2009 imac