Big Sur update
Have recently upgraded to a Mac Studio Ultra, but continue to work with an iMac alongside it. The iMac is presently using Catalina, but I would like to update that to Big Sur. When signed into the App Store with either Safari or Firefox, the down load is not working. I click on the get button, the dialogue opens up, "Finding the update", the blue line scrolls across, then nothing happens for the next 60 mins, until I try again.
with the same result.
Can someone kindly suggest a working method/
regartds
Simon
iMac 21.5″, macOS 10.15