Finding updates for Big Sur
Running Big Sur 11.7.3 on 21.5 inch 2019 Mac. Software Update runs forever checking for updates but never finds anything. How do I update to later versions of Big Sur or to a newer OS?
iMac 21.5″, macOS 11.7
Question marked as
It should find and install the update to 11.7.6 which was released on April 10, 2023. You may want to contact Apple Support to see if they can help. Contact - Official Apple Support
Also a 2019 iMac can be upgraded to the current macOS Ventura. See: How to upgrade to macOS Ventura - Apple Support