The Forward, Backward, and Downward Vision Systems can be calibrated with DJI Assistant 2 and DJI GO. If there is an error with the Forward, Backward, or Downward Vision System, a prompt stating that auto calibration for the Vision System is required will pop up in the DJI GO app. Follow the instructions in the DJI GO app to calibrate. For the best results, we recommend calibrating the Forward, Backward, and Downward Vision Systems with DJI Assistant 2. If you don’t have a computer at hand, calibrate them with DJI GO.