Only download from reputable software archives to avoid malware.
: Some users have successfully moved the "GarageBand.app" file directly from another Mac's Applications folder to their own, though this is an unofficial workaround.
If you find a clean .dmg of 10.3.5 on an archive site, grab it. It’s the "Neil Young on Spotify" of DAWs—slightly older, slightly grumpy, but the analog warmth is unmatched. It’s lean, mean, and won't try to sell you a subscription to appleOne while you're trying to lay down a bass track.
If you're looking to download or install GarageBand 10.3.5, here are a few things to keep in mind: