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
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