I’m kindly new in RC and multirotors and I’m trying to update my HK APM 2.9 to 3.0.1, I’m using lastest Mission Planner version, I can connect sucessfully to the APM and calibrate it.
My problem is when I tryed to update the firmware , the process read the hex file , stop around 90% and a message pop up : “Communication error - no connection”
I spend 2 hours with a “rc veteran” to find out what’s happened , we reinstalled an old MP version , change drivers , disable all COM ports like BT controllers ect… put it on USB2 port and we are unable to upgrade this APM.
As I read on some DYIdrone blog some had this issue and I need help to resolve this.
Thanks a lot.