- Aug 25, 2021
Have you found a solution? I have the same problem!Already tried it. The problem is something in my car headunit:
MMB BOX CP-600 is working well.
MMB BOX CP-600 PLUS not works with my car. But today I figured out that after hard reset to my car headunit, the MMB box works well ! but when I disconnect it and reconnect, it's not working...