How do I update my operating system on my Mac Book Air?
How do I update my operating system on my Mac Book Air?
Question marked as
Top-ranking reply
that would depend on which year MBP you have.
you can check compatibility and find the download for big sur here: How to upgrade to macOS Big Sur - Apple Support
if not compatible, find older macOS requirements and downloads here: How to get old versions of macOS - Apple Support