i  am having one error with my Phantom 4 " Nevagation System Error, Check Redundancy State"..Drone cannot take off. i have tried several steps like restarting both phantom, transmitter, phone and app but failed. Kindly assist ?

Get it outdoors where you get get some satellite signals.  Need at least 7-10 (I think?) to get a green "Okay to fly."

Sorry i was trying outside before i took it inside to the the photo shot. I have tried several times but still no success.  

Sorry i was trying outside before i took it inside to the the photo shot.  It seems i have GPS issue. May be some hardware issue (Not too sure)

fusion1g Posted at 2016-12-7 13:28
Sorry i was trying outside before i took it inside to the the photo shot. I have tried several times but still no success.

I had the EXACT same problem with my P4P+.  DJI Support walked me through every calibration, firmware and reset possible multiple times and in different order.  They just ended up asking me to ship it back for an Exchange.

fusion1g
any solution ?
i have same problem

any solution....??? i have same problem..!!  @fusion1g

Trying to set up a new Phantom 4plus PRO. At home, compass calibration worked fine. Now I'm ready to fly, but when I fire it up, I get a Navigation System Error: Check Redundancy State. No info in manual, of course, and Online responses to others with this problem have not exactly been helpful. (Re-calibrate IMU?). Anyone out there who has had this problem - and actually solved it?  Thanks.

looking at the picture, it says your are in atti mode, switch to P mode and see if that helps ?????

How long have you had it? Has it ever been in any kind of crash or bumped or dropped?