LIFE UNTIL NOW More Stories The Only One I Use But with iMovie '11, Apple has finally caught up with its past and made iMovie worth using again. All Apple needs to do now is iron out a few of its curious bugs. To download the macOS installer, open the App Store and search for your version of macOS. Click on the Download button if you’re on High Sierra or earlier. when you try to access through System Pref, it will cause it to quit System Pref and relaunch. Otherwise seems to work ok.