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I have a early 2011 MacBook Pro, running on Sierra. My device is not compatible with Mojave, Catalina. I am trying to upgrade to High Sierra, https://apps.apple.com/us/app/macos-high-sierra/id1246284741?ls=1&mt=12 the open/download link is broken. I get a message "This copy of the Install macOS High Sierra application is damaged, and can‘t be used to install macOS."
Has anyone run into this, how to get the macOS High Sierra installer?
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.
I am getting the message "This copy of the Install macOS High Sierra application is damaged, and can‘t be used to install macOS."
macOS High Sierra download from App Store
