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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.
I have an IMAC 27" (mid 2011) with OS High Sierra 10.13.6 (4 GB memory)and cannot figure out if it is possible to upgrade software. When I click on Software updates-says none available. In App store-none of the later versions (Mojave, Big Sur, etc ) allow me to download. Any ideas?
iMac 27″, macOS 10.13
You can't upgrade the OS any further, but you can upgrade the RAM easily to 32 GB...
https://eshop.macsales.com/shop/memory/iMac/2011/DDR3_21.5_27
Mostly you just need a more modern Browser than Safari on Mojave, or High Sierra like Firefox or Brave.
Opera…
https://www.opera.com/download/requirements
Opera system requirements | Opera
Thanks to dialabrain…
Firefox 112 is now the current version. runs in High Sierra.
You can't upgrade the OS any further, but you can upgrade the RAM easily to 32 GB...
https://eshop.macsales.com/shop/memory/iMac/2011/DDR3_21.5_27
Mostly you just need a more modern Browser than Safari on Mojave, or High Sierra like Firefox or Brave.
Opera…
https://www.opera.com/download/requirements
Opera system requirements | Opera
Thanks to dialabrain…
Firefox 112 is now the current version. runs in High Sierra.
That iMac is running the newest version of macOS that it can.
There is no further upgrade path for it.
Thank you for your help- that is what I suspected
Thank you for your help
You're welcome my friend, take care! :)
I have an IMAC 27" (mid 2011) with OS High Sierra 10.13.6 (4 GB memory)and cannot figure out if it is possible t upgrade software
