the app store has an error when trying to download High Sierra. states that "this version of high sierra installer is damaged". ergo, I cannot install it.
MacBook Pro 13″, macOS 10.12
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, empty trash & restart, then a new copy of a more recent version can be downloaded…
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, empty trash & restart, then a new copy of a more recent version can be downloaded…
I am going to guess that you did the download via Wi-Fi. If so, it will almost always fail. Instead try a new clean download using a wired Ethernet connection. I hope that works for you.
when I try to install High sierra, App store says the file is corrupt. is there a better link?
