How do I upgrade to 10.15.0 or later
How do I upgrade my MacBook to 10.15.0 or later operating system.
Back up your data, check your applications for compatibility, click here, and then on the download link for a newer OS. Your computer needs to be at least a 2012 model to run 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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