Hello, I’m new here as a writer, of therefore short introduction: I live in Hamburg, have been the owner of a Clubman S F54 year 2018, automatic. I am technically and/or artisanally well positioned (Kfz-Mechniker, computer scientist). Since I primarily use Androidphones, and the car lacks a rear camera, I have bought a Roadtop EVO device, and built in with an aftermarket camera. Closes so far, but unfortunately not quite. Maybe someone has experience with it: – the The reverse detect signal (via a filter) comes from the rear-view headlight, which, according to the manual, is to be generated by the device. Well, that’s also the case. – Main problem: No sound. A Bluetooth transmitter is included to connect the AUX cable to the jack. However, the mini cannot connect to the transmitter. In the Bluetoo camera, the camera works, and the switch to the rear-view headlight works accordingly. th menu only appears, one should trigger the Connect on the device. But the transmitter has no control. But I can see the transmitter as Bluetooth device e.g. on the mobile phone. Other possibilities of the sound transmission result in that I hear everything on the mobile phone, but not on the car system. Ergo: no sound e.g. from Spotify. If someone has an idea, I would be grateful.