Upgrade Mac OS to interim version

oldsubman wrote:

I am currently running Mojave on my MacBook Pro. How can I upgrade to Big Sur. I do not want to upgrade to Monterey at this time.

verify you are using the Safari browser to download/initiate the macOS links.

The older macOS installer backups on this server:

https://support.apple.com/en-gb/HT211683

Back up your data, check your applications for compatibility, and click on Big Sur.

(207073)