I just updated my P3P firmware to 1.6.  I have one of the first Phantom  3 Pros that came out.  Went out to test today and the Phantom is very  shaky.  I always do a IMU calibration after every firmware upgrade and  compass calibration.  I shot a quick video of the problem:

IMG_3958.MOV

What should I do now?  I've never hard this problem until this new update.  Help!

search the forum: http://forum.dji.com/thread-36287-1-1.html
15,000 view and over 500 responses, the vibration is widely reported and the current thought is that its temperature related.

This is my first time experiencing it.  When I updated to 1.5, it didn't have this problem and today was the first day I took my P3P out to test 1.6 and noticed it.  I haven't checked my video footage yet but if this affects the camera gimbal, then I'll have to have something done.  

try lowering all the basic gains to 75 or 80% and see if that eliminates the vibration.
Also try downgrading then upgrading firmware.

When downgrading to 1.5, do I just need to load it in like a firmware upgrade?