If you have access to another Mac running iMovie 10.2.5, you can manually transfer the application. On the source Mac, open the folder.
Source the file only from trusted, well-reviewed archive sites (like the Internet Archive) or authorized enterprise deployment links. imovie 10.2.5 dmg
Typically distributed via the Mac App Store, though users often seek the DMG for offline installs or restoring older versions on compatible hardware. System Compatibility: If you have access to another Mac running iMovie 10
If the app crashes on launch, your iMovie Library file might be corrupted. Try moving your current library to an external drive or creating a new library to test stability. imovie 10.2.5 dmg
The iMovie 10.2.5 update includes several features and improvements, including: