Hi guys, I've got a problem for which I couldn't find a solution by googling / phantompiloting.. Everything worked fine for me for like 8hrs and 110 flights, and today suddenly this: The PHANTOM 4 RC requires calibration (it's beeping annoyingly) so I tried calibrating via the app. Here's what I get and why the calibration can't complete. While I move both sticks and the camera throttle, the 100% indicators show progress only for the camera stick and the left stick to each direction. For the right stick, I get 100% completion only for the left and right direction, nothing up and down. I took some screenshots that show just before the calibration process, that the right stick actually responds, although irregularly (at the center position shows 100% down and when I push it up it shows 182%). The rest of the screenshots show that the left stick and the camera thing calibrate fine. So that's a dead end, I tried restarting everything, re-installing the app, downgrading the firmware on the aircraft and upgrading again, trying two other mobile devices (screenshots are from ipad). NOTHING! HELP!