[momo3605]

Does anyone know how to do this? I took my car in to the dealership to check my USB interface, and wma lossless files aren't working. I compared on some other dealer cars without navigation like mine, and it was working, so they want me to schedule an appointment...buuut I have a JB tune, so I wanted to know if there is anyway of doing this through USB? (I think my file system might be corrupted in someway) I downloaded the .bin files from the bmw website, but the restore feature is grayed out. Anyone know how to do this?

Thanks!