So I recently purchased a Phantom 3 Advanced from a second hand seller on ebay. They posted that it was parts only and I ignored that part cause I found a sweet deal on it. Anyways when I put the battery in the drone turns on, no lights flash and then comes the relentless beeping. I have tried to put new firmware into the drone and let it update but that hasn't seemed to have worked. The lights on the vision positioning system though seem blink red and green, what does that mean? Does anybody know whats wrong?