Help Me upgrade my OS
I need help upgrading my Operating System from OS X Yosemite Version 10.10.5 to the most current OS
MacBook Air 13″, OS X 10.10
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If your MacBook Air is a 2012 or later model, see: How to upgrade to macOS Catalina - Apple Support
If not, what model year is it? (From Apple menu > About this Mac).