Hi I have a question
I have a p3-4k but I see in the app under About
app 2.9.1
Firmware version: Null
Flight controller ns 63727282737

  firmeware virsion null what does that mean

Hello waspin2010, the aircraft works properly or not? may I know what mobile device you are using? have you ever tried to upgrade the aircraft firmware?
Please try to restart it for several times or change another mobile device to connect it then check again, if still the same, please post a screen shot here, thanks.