I've never flown the P2 yet, but have been installing and upgrading firmware. Recently (after a FPV install and firmware update) the H3-2D is powering on (ie the camera is powered, the video is coming through the gimbal cable just fine), but the gimbal itself is lifeless. I'm running the latest (as of last week) RC and P2 firmware, I did follow the instructions to update the RC first, recalibrate including X1, then update the P2 then recalibrate there again, etc. No luck. The gimbal just hangs limp. I've ordered a new H3-2D cable set, in case I somehow damaged the ribbon during my FPV iOSD and TX installation, and have ordered a new H3-2D in case I just toasted the gimbal somehow. Headed out on vacation in a week and really want the bird to take with me. While I await the cable and new H3-2D, any ideas would be greatly appreciated.