How to set Carplay / Android Auto sound to AUX audio output mode for BMW without OEM screen #roadtop

Please check before setting the sound! If the original vehicle has fiber optic cable,please remove it from the original connector to the new one. Step by step: 1. Please connect the AUX cable to the OEM AUX port. 2. For CIC system, the GND cables should be disconnected from each other. If audio distortion occurs, connect the GND cables. 3. Disconnect any existing Bluetooth connection between your phone and the vehicle. 4. In the Setup - System menu, set the "Use Car’s BT Channel" function to OFF 5. Switch to OEM Radio Panel: ① Press the MODE button ② Set the sound output to AUX. ③ The AUX volume cannot be set to 0. Please keep the AUX option on the radio page. Then return to the Linux system. CarPlay / Android Auto sound will now play. #roadtop #carplay #bmw #e90 #87