For specific version archiving, third-party sites like FileHippo host the 10.2.5 installer. Note: Always scan third-party DMGs for security before opening.

🔐 Pro tip: Always verify the SHA-1 checksum of any legacy DMG before opening, and never run unknown installer packages without scanning with Malwarebytes or VirusTotal.

If you’re using this version to breathe life into a 2012–2015 Mac, optimize:

Methods

Assuming you have obtained a legitimate iMovie_10.2.5.dmg file, follow these steps: