how to upgrade macbook air 13 mid 2012
Mac book to upgrade
MacBook Air 13″, OS X 10.10
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Back up your data, check your applications for compatibility, click here, and then on the download link for El Capitan, 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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