: If your macOS is too old (e.g., High Sierra), the 10.2.5 DMG will not initialize. You must update your OS or find a version compatible with your specific macOS build.
To download iMovie version 10.2.5 as a DMG, you typically need to use the Mac App Store's version history feature, as Apple does not officially provide direct DMG file downloads for older versions. Official Download Method (Recommended) Imovie 10.2.5 Download Dmg
Assuming you have obtained a legitimate file, here is the safe installation process: : If your macOS is too old (e