I'm trying to get my old Mac OS up to date, and I need to install High Sierra so that I can be able to install the latest OS. When I try to download the install, I get this error message:
"This copy of the Install macOS High Sierra application is damaged, and can‘t be used to install macOS."
Where can I get an undamaged version?
iMac 27", macOS 10.12
Hi Mia,
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 can be downloaded.
Hi Mia,
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 can be downloaded.
Thank you!!!
You're quite welcome Mia, stay safe! :)
Mac OS High Sierra
