update MacOS
I want to upgrade OS on my machine. Currently running Sierra version.
MacBook Air (13-inch, Mid 2012)
What is the most recent available? Monterey doesn't install.
Back up your data, check your applications for compatibility, click here, and then on the download link for High Sierra, Mojave, or Catalina.
Catalina and newer won't run 32-bit software; download and use Go64 as well as using the first link above.
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