in summer I was running an APM 2.5 quite successfully. Unfortunately one day I hit the ground with 100 mph, and the only surviving part was the damn motor :-|
I just bought a new APM, but it seems I am still out of luck: after successfully flashing the firmware, I cannot connect the Mission Planner ("Connect failed" during parameter loading). I launched the terminal from Mission Planner and tried severel test commands. Most of them are working as expected, except the IMU test. If I start this test, it says "Init Gyro" and seems to hang. There is one more strange thing: if I remember correctly, the old APM was blinking the ABC leds during startup/leveling. The new one isn't doing this anymore. The only LED activity is a steady alive LED and the GPS led ('C') turning from blinking to steady after some time.
Any ideas how to fix?