Software Upgrade from Catalina
Hello all, I'm trying to upgrade from Catalina 10.15.7 to Big Sur. After clicking on the software update button, the box comes up and says checking for updates. However, the pinwheel keeps spinning and nothing happens; just keeps spinning and spinning. I then tried to go in to the App Store and no updates were found. I'm not sure why no upgrades are coming up for me.
This my system: iMac (Retina 4K, 21.5-inch, 2017). I have 910GB of free storage. Thanks for your help!
iMac 21.5″ 4K, macOS 10.15