bobscott wrote:
How can I verify that my MacBook Pro Retina 13"-- by its serial # -- can be updated to Big Sur? Apple says only "Late 2013" models will update.... mine is "Early 2013" I'm hoping the specific serial # is a better check. I have plenty of storage
The only check you need
>About this Mac
If it says early—you do not qualify, this is not a "plenty of storage" issue— it is due to hardware limitations.
You can go no further than macOS Catalalina
The older macOS installer backups on this server:
https://support.apple.com/en-gb/HT211683
verify you are using the Safari browser to download/initiate the macOS links.
How to upgrade to macOS Big Sur w/tech specs
https://support.apple.com/en-ca/HT201475