How to fix the MacOS High Sierra application is damaged?
This copy of the Install macOS High Sierra application is damaged, and can‘t be used to install macOS
iMac 21.5″, OS X 10.10
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This copy of the Install macOS High Sierra application is damaged, and can‘t be used to install macOS
iMac 21.5″, OS X 10.10
If you’re short of bandwidth or data… 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.
Otherwise Niel has the preferred method.
If you’re short of bandwidth or data… 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.
Otherwise Niel has the preferred method.
Choose Applications from the Finder's Go menu, throw the existing installer away, restart the computer, and download it again.
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How to fix the MacOS High Sierra application is damaged?