Downloading a reliable ISO is crucial.
An is a disc image that contains a complete copy of the operating system's installation files. The macOS High Sierra 10.13.6 ISO specifically represents the final, most refined version of macOS 10.13, which was released in July 2018. Version: 10.13.6 (Build 17G65)
Once you have a verified ISO file, here is how to use it in common scenarios.
Compromised operating systems can upload your personal files, Apple ID credentials, and passwords to remote servers.
sudo /Applications/Install\ macOS\ High Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/install_build Convert to ISO: hdiutil detach /Volumes/Install\ macOS\ High\ Sierra