Open the Terminal app ( Applications > Utilities > Terminal ) and strip the quarantine flag by typing the following command, followed by Enter: xattr -cr /Applications/iMovie.app Use code with caution.
iMovie projects can quickly fill up your hard drive. Consider moving your iMovie Library file to an external SSD to keep your Mac's internal storage clean.
Do not double-click the app. Instead, right-click (or Control-click) the iMovie icon in your Applications folder and select Open . A prompt will appear asking if you are sure you want to open it. Click Open again, and the app will launch normally. Error: "The application is damaged and can't be opened"
: Apple does not typically provide standalone DMG installers for modern iMovie (version 10.x). Be wary of malware from unofficial sources. imovie 1025 dmg install
If your Mac runs High Sierra or Mojave and you rely on older plugins, stick with 10.2.5. If you have a Mac from 2017 onwards, update to the latest iMovie via the App Store.
Right-click the mounted iMovie disk icon on your desktop screen. Select .
Given that the current version (as of 2025) is iMovie 10.4 or 10.5, is 10.2.5 still relevant? Open the Terminal app ( Applications > Utilities
iMovie 10.2.5 is a highly sought-after release because it balances modern editing features with compatibility for older operating systems. By downloading a standalone DMG file, you bypass the App Store's version restrictions and install the software directly onto your Mac. System Requirements for iMovie 10.2.5
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Open the Mac App Store and click your name or profile in the bottom-left corner. Do not double-click the app
This article will walk you through everything you need to know about iMovie version 10.2.5, why you might need the .dmg file, and a step-by-step guide to a successful installation.
Open your folder and double-click iMovie . The software may take an extra moment to launch the first time as macOS checks for malware signatures. Security Precautions and Troubleshooting