Hoping someone can help with this.  I bought a slightly used P4P from the original owner a few weeks ago, and it has flown fine ever since then until this afternoon.  I went through the usual procedures in getting ready to fly with Go4 when I suddenly noticed the message in the upper left of the screen that said "cannot take off".  Looking around a little further, I noticed the message "aircraft locked" and all of the indicator lights are red.  Can someone tell me why this is happening and what I need to do to unlock the aircraft?

Same thing is happening here
https://forum.dji.com/forum.php? ... D386%26typeid%3D386

Man I wish I knew a hacker that could sterilize all my DJI drones and make them fly free of all the BS that is incorporated into them. I hold my breath every time I power up wondering what's coming next

Does make ya wonder what's next with the whole P 4 series.

Fixed it!  Had to update the Precise Fly Safe Database, and once I did that, the P4P was unlocked.

boykintom Posted at 2017-12-4 04:16
Fixed it!  Had to update the Precise Fly Safe Database, and once I did that, the P4P was unlocked.

Nice to hear that .. really

Good to hear your up and flying again

boykintom Posted at 2017-12-4 04:16
Fixed it!  Had to update the Precise Fly Safe Database, and once I did that, the P4P was unlocked.

Glad you solve that. You can also check through our website about the NFZ. If you have the problem again, please pay attention to the message and see if you are in NFZ: http://www.dji.com/flysafe?site=brandsite&from=footer.

DJI Elektra Posted at 2017-12-9 20:08
Glad you solve that. You can also check through our website about the NFZ. If you have the problem again, please pay attention to the message and see if you are in NFZ: http://www.dji.com/flysafe?site=brandsite&from=footer.

Thanks.  I definitely was not in a no fly zone.

boykintom Posted at 2017-12-4 04:16
Fixed it!  Had to update the Precise Fly Safe Database, and once I did that, the P4P was unlocked.

I'm just about to buy a P4P and seeing this and what other problems that other people are getting with P4P I'm wondering if I should buy one. Where in the setting did you fix the unlock to fly?

I will hopefully be flying mine on the farm where I work but it's in the red section of the NATS app, I'm wondering what will happen if I do fly the drone.

QuadKid Posted at 2017-12-3 15:27
Same thing is happening here
https://forum.dji.com/forum.php?mod=viewthread&tid=121922&extra=page%3D1%26filter%3Dtypeid%26typeid%3D386%26typeid%3D386

My Thoughts are the same.

Paul Tomo Posted at 2017-12-10 16:34
I'm just about to buy a P4P and seeing this and what other problems that other people are getting with P4P I'm wondering if I should buy one. Where in the setting did you fix the unlock to fly?

I will hopefully be flying mine on the farm where I work but it's in the red section of the NATS app, I'm wondering what will happen if I do fly the drone.

This YouTube video shows how it is done:

boykintom Posted at 2017-12-10 13:49
Thanks.  I definitely was not in a no fly zone.

Please reboot your drone in a place with good GPS signal. You can open mobile data to update the current location. I would recommend you provide a screenshot if the problem exists.