Finding an official DMG for iMovie 10.2.5 (or related older versions) is difficult because Apple typically only provides the latest version through the Mac App Store.
Stability Enhancements: Improved reliability when exporting video with specific "Language and Region" settings. imovie 1025 dmg
Stability Fixes: Addressed critical issues including crashes during project media updates and potential corruption of video or audio during export. Technical Specifications iMovie on Catalina | Dave Mateer's Blog Finding an official DMG for iMovie 10
Summary: The safest way to get iMovie is through the Mac App Store, which will automatically determine the correct version (e.g., 10.2.5) for your specific macOS version. Technical Specifications iMovie on Catalina | Dave Mateer's
| Requirement | Detail | |-------------|--------| | macOS | 10.11 El Capitan, 10.12 Sierra (may work on later up to macOS 10.14 Mojave, but not officially supported on Catalina+). | | RAM | 2GB minimum (4GB recommended) | | Storage | ~2.5GB for install | | Graphics | Metal-capable GPU recommended |