I recently bought a new X8, and unlocked it from Three. Unfortunately, when branding the phone they decided to install all manner of crud that the user won't necessarily need. Apps such as Spotify load whether you want them to or not, and there's nothing you can do about it!
Well, nearly, you can root the phone and then uninstall the problem apps.
There's plenty of guides out there on how to root the X8 from Windows, but information regarding Linux and Mac systems is much harder to find! Let's begin;