To roll back the registry just remove the settings you added to platform.reg (or project.reg, or OSDesign.reg, depending on which CE version you're working on), and do the appropriate build action as described here: http://guruce.com/blogpost/what-to-build-when
RE: Bluetooth
To roll back the registry just remove the settings you added to platform.reg (or project.reg, or OSDesign.reg, depending on which CE version you're working on), and do the appropriate build action as described here: http://guruce.com/blogpost/what-to-build-when