A full 5.0GB ISO of macOS High Sierra 10.13 is available on the Internet Archive Alternative Packages: Technical users may download segmented packages (like InstallAssistantAuto.pkg ) from community forums such as InsanelyMac to manually reconstruct the installer app. Internet Archive Creating a Bootable USB
Click and select your extracted macOS High Sierra 10.13.6 RAW image. Select your target USB drive as the destination. Macos High Sierra 10.13.6 Raw Download
Create a new virtual machine and select the ISO file as the startup disk. A full 5
You can download the High Sierra installer directly through the Mac App Store using Apple's hidden links or via the terminal using the softwareupdate --fetch-full-installer --full-installer-version 10.13.6 command. Macos High Sierra 10.13.6 Raw Download