I flew 5 batteries worth of flying yesterday in the p4p and this new bird flys so well, I performed the app up last night and flew again today another 5 batteries worth of flying and I was getting a warning keep popping up saying obstacle avoidance and to change flight direction or something similar to that, it only briefly pops up and quickly disappears so no chance of getting a snapshot of screen.
I have only had this warning since updating the app, anyone else had this ?

we're you flying into the sun? Extreme sun light blasting my obstacle detection sensors always triggers a warning on my P4P.

No, it didn't matter what way I flew, it still come up

I had the same issue flying into the sun,,

Snowwolfwarrior Posted at 2017-3-16 12:19
No, it didn't matter what way I flew, it still come up

But don't forget that the message may still appear with the P4P due to something detected from the rear also.  I've received that message when sliding the craft past a bush to it's rear (which caught me by surprise for a moment as nothing was in front).

However, if the message is consistent, then I have no idea short of dirty or oily visual sensors (e.g. from finger smudges).

Try calibrating them through the DJI Assistant

Is that the vps ?