if i'm running os 10.12.6 can i go directly to 10.13?
MacBook Air 13″, macOS 10.12
Yes, provided that is the last version of macOS your model supports. The following links will provide support information as well as download links for macOS.
Yes.
Don't use FireFox for this link…
https://itunes.apple.com/app/macos-high-sierra/id1246284741?mt=12
If you get a corrupted message...
Naw, not damaged, it's just that you have an old copy already in Applications, there are 2 cures...
Disconnect from the Internet & set the Date back to 2014, then you can run the Install MacsOS High Sierra App in Applications, so expired Certificates are not expired.
Or... trash the Install MacsOS High Sierra.app in Applications then a new copy more recent version can be downloaded.
os upgrade
