Rear camera won't work

Hi,

I hope I will get some help here with the probem that I have. 

I have a M1 Pro with 2 cameras, but the rear one, for some reasons, just won't work in the pass few days. I haVE follow the instructions to activate the rear camera. It is suggest to turn off the motor of the car, enplug the power to the M1 Pro restart the car and plug in the power of the car. Nothing kis happening, no power to the camera. I have reformat the Dcard with no results. Maybe I should update the software of the M1 Pro.  If I don't get help and some results, than I will scap the software and by from another compagny new cameras. Marcel