Pixhawk clones good/bad

Hey Lat_Long, just purchased 2 of the Px4Pilots from Hobbyking and can’t seem to upgrade the APM firmware. Both come shipped with ArduCopter v3.2.1 preloaded.

Have you uploaded a newer (or different) version of firmware via Mission Planner successfully?

Hello Sir,
Please accurately set direction of compass with direction of flight control board, According to my personal experience some times reason of bad AHRS is mismatch direction of compass and board.

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Ardupilot is hard enough to set up properly from scratch without having additional questions over the hardware, you need good reliable hardware so you dont have to question every issue you have as possibly being due to the fact that you’re using clone gear. Get the real stuff and stay away from chinese clones