I have an iMac 27" and need to update from Catalina 10.15.7, but constantly keeps searching for update, never finds it.
how do I get my iMac to update from Catalina 10.15.7 to the next level? Would that be Big Sur? It keeps searching for an update, but never finds it. How do I fix?? Thanks - Barbara
iMac 21.5″, macOS 10.15
