To avoid the “This copy of the Install macOS High Sierra application is damaged” error, always verify checksums.
Some open-source tools like MIST (macOS Installer Super Tool) can download old installers directly from Apple’s servers – but they download the .app, not a raw DMG.
Open Terminal and paste:
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/USB --nointeraction
Final command reminder:
softwareupdate --fetch-full-installer --full-installer-version 10.13.6
That single Terminal line is your safest, fastest, and most legitimate route to downloading the full macOS High Sierra 10.13.6 package. Once downloaded, you can extract the InstallESD.dmg anytime.
Last updated: June 2025. Information based on Apple’s current distribution policies. Some App Store links may change; if the direct link fails, use Terminal method. download macos high sierra 10.13 6 dmg file
To download the macOS High Sierra 10.13.6 full installer, you typically need to use the Mac App Store, as Apple does not provide a direct
file for this specific version like it does for older OSs like Sierra or El Capitan. Apple Support Community Method 1: Official App Store Download (Standard)
This is the most reliable way to get the "Install macOS High Sierra.app" directly from Apple's servers. Open Safari
: Using other browsers can sometimes cause errors with the redirection. Visit the Download Link : Go to the official macOS High Sierra App Store page Click "Get" : This will trigger the Software Update preference pane. Confirm Download to start. The installer will be saved to your Applications Install macOS High Sierra.app Apple Support Community Method 2: Using Terminal (Advanced)
If you are on macOS Catalina or later, you can download the installer directly via the command line. Apple Support Type the following command: To avoid the “This copy of the Install
softwareupdate --fetch-full-installer --full-installer-version 10.13.6 . The file will download to your Applications Apple Support Method 3: Third-Party Tools (For DMG conversion)
macOS High Sierra (version 10.13) remains a vital operating system for millions of Mac users worldwide. While Apple has moved on to newer versions like macOS Ventura and Sonoma, High Sierra serves as a crucial bridge between older hardware and modern software ecosystems. Specifically, macOS High Sierra 10.13.6 is the final, most stable iteration of this OS, packing critical security patches, APFS (Apple File System) refinements, and support for HEVC (High Efficiency Video Coding).
If you’ve been searching for a reliable way to download macOS High Sierra 10.13.6 DMG file, you’ve likely discovered that Apple no longer prominently features it on the App Store front page. Worse, many third-party websites offer corrupted, infected, or illegally modified installers.
This article will walk you through everything you need: why you might need High Sierra 10.13.6, where to find legitimate DMG files, how to verify their integrity, and how to create a bootable USB installer.
Since Apple provides the .app format, you may need to create a DMG for backup or virtualization purposes. Open Terminal and paste:
If you already have a base version of High Sierra (10.13.0 to 10.13.5) and need only the update, Apple provides a combo DMG:
This DMG updates an existing installation but does not serve as a full standalone installer.
For Macs already running High Sierra or earlier, use this Terminal command:
softwareupdate --fetch-full-installer --full-installer-version 10.13.6
This pulls the complete installer directly from Apple’s servers and places it in the Applications folder.