Having difficulty upgrading from Catalina to Big Sur. I can't upgrade to Ventura due to age of my mac but wanted to go to Big Sur since Catalina is no longer supported. Software update just continues to spin while checking for updates and I just want to download the Big Sur OS. Any suggestions?
iMac 27″, macOS 10.15
I have reviewed that page and followed directions. What happens is that the update never shows up and just keeps spinning looking for it. This is minutes of waiting and still nothing. I do see an installer for Montery but I rather get Big Sur for now.
See this document for how to get old versions of macOS - How to download macOS - Apple Support
Try again later. It could be a server issue but all it takes is something slowing down the system between your keyboard and Apple.. Apple - Support - System Status
Upgrade to Big Sur
