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Your Mac must be running at least OS X Mountain Lion 10.8 or later to perform the upgrade. Creating a Bootable USB Installer
Your completed, official DMG file will now be saved directly to your Desktop. How to Create a Bootable USB Installer From the DMG download macos high sierra 10136 dmg mac top
: Use the App Store link above so the "Install macOS High Sierra" app is in your Applications folder.
If you are already on an older version of High Sierra (like 10.13.1) and just need the 10.13.6 files, you can download the Combo Update macOS High Sierra 10.13.6 Combo Update (approx. 2.5 GB). macOS High Sierra 10.13.6 Standard Update (requires version 10.13.5). Apple Support 3. Creating a Bootable USB (Mist Utility) date 0101010116 Your Mac must be running at
: You can download the full installer directly via the macOS High Sierra App Store Link . This typically downloads a file named "Install macOS High Sierra" into your Applications folder.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. If you are already on an older version
If you have a previous purchase or are on an older OS, you can sometimes download the via the App Store. Source: Apple App Store
Method B: Downloading via Apple's Terminal (For macOS Big Sur or Newer)