You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

zoan1989 Author

Level 1

4 points

what do I do if the macOS update IS CORRUPTED and won't let me install it

What do I do if macOS High Sierra is damaged, and can not bed used to install macOS

MacBook Pro 15″, OS X 10.10

Posted on Nov 8, 2021 5:01 PM

Top-ranking reply

BDAqua

Level 10

245,483 points

Posted on Nov 8, 2021 5:07 PM

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…

Don't use FireFox or Waterfox for this link…

https://itunes.apple.com/app/macos-high-sierra/id1246284741?mt=12-

View in context

what do I do if the macOS update IS CORRUPTED and won't let me install it

Similar questions