I have been repairing a crashed P3 Pro. On completion and powering up I had messages to calibrate the IMU and calibrate the Compass. IMU calibrated no problem. Compass showed an error. I demagnetised it, re-calibrated it and it calibrated.
So everything looked good to go. Without the props on I attempted a take off and got an ESC Error message. This doesn't resolve on trying to restart. I had a similar issue with an Inspire 1 V2, which I resolved by swapping out the four motors and associated ESC boards. With the P3 Pro the ESCs are within the main board, so not an easy swap out. On Phantom Pilots and You Tube there are many posts about this being a Firmware issue. (I still don't understand how DJI can so glibly issue out updated Firmware that trashes so many peoples' drones - it is not good business promotion). I saw that downgrading the Firmware used to be an option but with the issue of V01.11.02 DJI effectively blocked this process. I then saw the use of a Word file in addition to the Firmware you were looking to downgrade to as the solution. I tried going back to V01.10 but on start up the camera calibrates then nothing more happens, no sounds of any computer activity. On checking the SD card it now has a Report file that says V01.11.02 does not allow any changes to the Firmware. So two questions; 1. Can this be resolved by swapping out the main board? 2. Is there an up to date, tried and tested way of resolving the Firmware situation? Please do not suggest re-flashing the ESCs. I am a unbolt / bolt on type of guy, that sort of thing is way beyond my understanding and capability. Appreciate your time, Martin
So everything looked good to go. Without the props on I attempted a take off and got an ESC Error message. This doesn't resolve on trying to restart. I had a similar issue with an Inspire 1 V2, which I resolved by swapping out the four motors and associated ESC boards. With the P3 Pro the ESCs are within the main board, so not an easy swap out. On Phantom Pilots and You Tube there are many posts about this being a Firmware issue. (I still don't understand how DJI can so glibly issue out updated Firmware that trashes so many peoples' drones - it is not good business promotion). I saw that downgrading the Firmware used to be an option but with the issue of V01.11.02 DJI effectively blocked this process. I then saw the use of a Word file in addition to the Firmware you were looking to downgrade to as the solution. I tried going back to V01.10 but on start up the camera calibrates then nothing more happens, no sounds of any computer activity. On checking the SD card it now has a Report file that says V01.11.02 does not allow any changes to the Firmware. So two questions; 1. Can this be resolved by swapping out the main board? 2. Is there an up to date, tried and tested way of resolving the Firmware situation? Please do not suggest re-flashing the ESCs. I am a unbolt / bolt on type of guy, that sort of thing is way beyond my understanding and capability. Appreciate your time, Martin