How do I upgrade my Mac?

Back up your data, check your applications for compatibility, click here, and depending on which Mac model you have, then on the download link for High Sierra, Mojave, Catalina, Big Sur, or Monterey. If you get a Mac App Store preview page, change the https at the beginning of its address to macappstore.

Catalina and newer won't run 32-bit software; download and use Go64 to scan for it. To look other programs up, click here.

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Q - " I need at least Os 11.5"

A - There is only One Full Version of macOS 11 Big Sur

At press the only available Full Version offered by Apple is Big Sur 11.6.5

Tips Big Sir Upgrade