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valentino133 Author

Level 1

4 points

Clean install of El Capitan

This copy of the install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading. what does this mean?

MacBook Pro 13″, macOS 10.15

Posted on Feb 28, 2021 3:37 AM

Top-ranking reply

Blackbiter

Level 2

272 points

Posted on Feb 28, 2021 6:15 AM

I would try to install the application again, directly from Apple: http://updates-http.cdn-apple.com/2019/cert/061-41424-20191024-218af9ec-cf50-4516-9011-228c78eda3d2/InstallMacOSX.dmg

Follow this link for more help: How to get old versions of macOS - Apple Support

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Clean install of El Capitan

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