I have a phantom 3 professional, with apple iPad mini 3. I did a recent firmware upgrade to 1.11.2 and I now have no live video feed. I have tried the method of removing the sd card and restarting everything and nothing works. I have full control of the gimbal and can arm the AC and fly line of sight. Everything else works except for the live video feed. I read another post about DJI having to do a repair before I could get video back.Please if anyone can help, I would really appreciate it.