Any suggestions how to force a restart on my controller. (P4P+) Tried a firmware downgrade, now Go 4 will not start on the built in android OS. Please Help. I want to fly tomorrow Assistant 2 will not recognize the controller to attempt fix that way.
Did you try to do a factory reset on the remote controller? Swipe down from the top of the screen and go to "Settings" --> "Backup & reset" --> "Factory data reset".