Hello, i just upgraded my phanton 4 and i got the camera sensor error mesage. i tried to downgrade but no luck... the camera it was ok before that... does anyone know what happened... why upgrading made this, do know how to fix it

Hi there, sorry for the inconvenience. This issue occurs when the ribbon cable has not been connected correctly to the camera main board, hence, information from the main board cannot be accessed and “Camera Sensor Error” is shown in the DJI GO4 app.
Please do the following to fix the issue:
1) Check whether the firmware for the aircraft and remote controller is the latest.
2) Start the aircraft again.
3) If the issue cannot be fixed, send the product back to DJI for repair.
Please kindly contact our support at the link: http://www.dji.com/support to open a case and then send the drone in, we'll do our best to help this out. Thanks.