I recently got a Phantom 4 and on the 2nd flight I got this error 1 IMU Requires Calibration. External IMU1:error code  0xffffffb9 and No matter what I try to do it fails when trying to calibrate it. Am I missing something? Here is the screenshot error I am getting: http://screencast.com/t/DCaYQMzg9

Hi, could you tell me the firmware version of the drone and rc as well as the app? Did your Phantom 4 experience any crash or collision before this error came up ?

Drone 01.00.0288 & RC 1.5.80. No I didn't crash it but it did land in a bush but that is it.

lol,  landing in a bush is sort of a crash.  Your imu may be stuck,  if all else fails there is a thread on here somewhere about how to un-stick it.  Basically it involves whacking your Phantom pretty good on the opposite side from the ,  er ,  uhm,  landing in a bush.  This is a last resort,  but many have reported success with it.  

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Kneepuck Posted at 2016-4-1 09:01
lol,  landing in a bush is sort of a crash.  Your imu may be stuck,  if all else fails there is a th ...

OK I will look for it. I didn't think backing into a bush from 2 feet off the ground as an crash but I guess I am still learning. Thanks for the help.

Kneepuck Posted at 2016-4-1 09:01
lol,  landing in a bush is sort of a crash.  Your imu may be stuck,  if all else fails there is a th ...

Are you referring to this link? https://www.reddit.com/r/djiphantom/comments/3nb8c3/accelerometer_stuck_cant_calibrate_imu_try_this/

davidmoceri Posted at 2016-4-1 10:39
Are you referring to this link? https://www.reddit.com/r/djiphantom/comments/3nb8c3/accelerometer_ ...

That's not the one,  but the instructions look the same.  The one I was referring to was on here and had video.

Kneepuck Posted at 2016-4-1 20:31
That's not the one,  but the instructions look the same.  The one I was referring to was on here a ...

The same problem I have and is new  from the box ...

http://youtu.be/mhFyhdR9NBs