u/Key_Obligation2109

Hi everyone, I have got a chinese version of the rox01, the car is amazing, and it has 1.7.1 firmware/software. my question is: how can I play music from the USB drive, I have tried 3 ports, one below the headunit, another one inside the arm rest, and last one in the second row, but non of them work and when i select usb music from the media (radio, usb, BT) the usb is not plugged. Any idea please?