: You can access the hidden High Sierra download page through the Apple Support guide .
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ High\ Sierra.app download macos high sierra 1013 iso and dmg upd
Once you've downloaded the macOS High Sierra ISO or DMG file, you can create a bootable USB drive using the following steps: : You can access the hidden High Sierra
: If you already have 10.13.x installed and only need the final 10.13.6 "Combo Update" to bring it to the latest version, you can download the macOS 10.13.6 Combo Update directly from Apple. Creating a macOS High Sierra ISO or USB download macos high sierra 1013 iso and dmg upd
Run this command in Terminal: sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume . :