Always download Apple software from official sources. Avoid third-party “download mirror” websites that may bundle malware or modified installers. As of 2025, Apple has changed distribution methods several times, but there are two official ways to obtain the DMG.
Finding an official is often difficult because Apple officially distributes the software exclusively through the Mac App Store . However, understanding how to acquire and use it properly is essential for IT administrators managing large fleets of iOS and macOS devices. Official Download Method
Apple Configurator 2 is a powerhouse tool that creates a "DMG-shaped hole" in the workflow because Apple assumes everyone has high-speed internet and doesn't need offline installers.
If your Mac is running an older OS (like macOS 10.13 High Sierra or 10.14 Mojave) and the App Store tells you the current version is incompatible, you can often download the "last compatible version" by following these steps:
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