If you are looking at community-driven projects that focus on patching the app rather than downloading random files, these are the current popular methods:
For those who want a reliable experience without the risk of a ban, there are several official ways to get Premium for free or at a lower cost: spotify-premium-apk-mod-unlocked-v8-7-88-496-download
Enable "Unknown Sources" in your device's security settings. If you are looking at community-driven projects that