"This copy of the Install OS X El Capitan application is damaged..." Solution: Change your system date in Terminal. Boot into Recovery Mode or Single User Mode and type: date 122014102015.30 (Sets date to Dec 20, 2015). Apple's certificate expired in 2019, requiring a date rollback.
install the OS yet; it will extract the "Install OS X El Capitan" app to your Applications Apple Support 3. Creating a Bootable Installer (USB or ISO) Mac Os X El Capitan 10.11 6 Iso Download
Are you planning to install this on or a virtual machine ? "This copy of the Install OS X El
If you find a direct link to a random .iso file on a torrent site, you are playing Russian roulette with your digital security. We will show you the to download the original Installer and convert it to an ISO yourself. install the OS yet; it will extract the