Recently I got a phantom 4 pro plus with the built in display and when i turned it on the maps didn't work and for hours i tried updating and downgrading until i found this apk for dji go 4 v4.3.14 which I installed easy from the latest firmware in in the file browser
!!WARNING I READ THIS ONLY WORKS ON THE GL300E MODEL AKA THE PHANTOM 4 PRO 1.0 PLUS REMOTE!!
Here is the apk HiDrive
The password is help100
it should also be attached -- Happy Flying