update mac os software from yosemite
My iMac is from 2015 and currently runs OS Yosemite. Browsers aren't compatible with the lower OS. How can I upgrade my software?
Earlier displays & monitors
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A Mid 2015 iMac can run Big Sur – but nothing higher. A Late 2015 iMac can run Monterey – but nothing higher.
By default, the Mac App Store hides old versions of macOS. The only thing it will show you now is Sonoma – which your Mac can't run. To get older versions of macOS, use the links in this Apple Support document:
How to download and install macOS - Apple Support
Note that if you update to Catalina, Big Sur, or Monterey,
- 32-bit applications will stop working.
- iTunes will go away, and be replaced by separate apps: What happened to iTunes? - Apple Support