I've got a OnePlus One. I'm at the point where I need to download and install the image. The question is which one? There are three listed for the OnePlus One but no guidance one which one to to install. The phone currently has Android 6.0.1 and Cyanogen OS 13.1.2-ZNH2KAS3P0-bacon. My options are OnePlus One Marshmallow, Pie, and Ten. How do I know which one to use?