Update OS of macbook air from 10.8.5
Why does my macbook air indicate no updates are available
MacBook
Because the next step is a full-version upgrade. Back up your data, check your applications for compatibility, and depending on which MacBook Air model you have, download El Capitan, High Sierra, or Mojave; it's not possible to upgrade straight from 10.8.5 to an OS newer than that.
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