I have a P4'and suddenly the return to home function is not working and the 2 rear lights are solid red. I have tried calibration and re booting to not avail. Can you help me please
Martin

Martin, may I know it's crashed or hard landing before? or you noticed the issue after a firmware upgrading or something else?
On the APP page, any error message popping out?
Would you please describe "RTH is not working" in details? The rear lights keeps solid red all the time, right? would you please upload a short video for evaluation? thanks.