A Inspire 1 v2, RC set for about year. Started RC and controller RC never left the ground. All is fine and then says has a compass error. Tried to calibrate. Won't calibrate. Turned RC controller off and then on. Now RC will only beep with no lights on back, lost linking to controller. RC fails to go thru initialize sequence. Tried Multi controllers, camera on camera off, cycled landing gear. Won't update firmware. Just sets there beeping, no lights, won't initialize, won't communicate, won't update? It's a Boat anchor. Not a newby. Out of ideas.