yosemite
My Mac OS is Yosemite. can't upgrade OS anything anymore ? It's getting old but still everything is good, super fast but I can't watch netflix nor amazon prime...
MacBook Air 13″, OS X 10.10
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The model year of a MacBook Air is available at Apple menu > About This Mac.
A mid 2009 MacBook Air can be upgraded to El Capitan 10.11.6 but no later version. See: How to download macOS - Apple Support
A late 2010 through mid 2011 MacBook Air can be upgraded to High Sierra 10.13.6 but no later version. See: How to download macOS - Apple Support
A mid 2012 MacBook Air can be upgraded to Catalina 10.15.7 but no later. See: How to download macOS - Apple Support
A mid 2013 and early 2014 MacBook Air can be upgraded to the latest version of Big Sur macOS 11 but no later. See: How to download macOS - Apple Support
An early 2015 and a 2017 MacBook Air can be upgraded to the latest version of Monterey macOS 12. See: How to download macOS - Apple Support
A 2018 or later MacBook Air can be upgraded to the current version of Ventura macOS 13. See: How to upgrade to macOS Ventura - Apple Support
If you can't upgrade to Monterey or Ventura but can upgrade to High Sierra or later, you may want to upgrade as far as you can and then use a 3rd party internet browser that supports using it's latest version. Chrome is one example and it can run its current version on High Sierra or later.