HAVE A P3P4K ,DRONE IS FINE I HAVE USED ANOTHER CONTROLLER TO CHECK PROBLEM . SUBSTITUTE CONTROLLER WORKS FINE ,PROBLEM IN ORIGINAL CONTROLLER . I UPDATED THE DRONE TO LATEST FIRMWARE. WHEN CONTROLLER STARTED TO UPGRADE THE LEFT BOTTOM LED WENT BLUE AND WOULD NOT CHANGE. NOW DRONE DOES NOT CONNECT. I CAN USE THE DJIGO APP AND TRY TO UPDATE,BUT ONLY GET 2% AND FAILS UPDATE. CONTROLLER IS GL300B. I HAVE SEEN FROM BROWSING NUMEROUS THREADS THAT THIS HAS BEEN A PROBLEM IN UPDATES. APP SAYS FIRMWARE IN CONTROLLER 1.8.0. HAVE TRIED HARD RESET, APP RESET,RESET WITH DRONE AND CABLE AND THUMB DRIVE WITH FIRMWARE IN USB OF CONTROLLER NO GOOD JUST SOLID BLUE LED. TRIED POWERING OFF EVERYTHING RELOADING APP STILL NO GOOD. STRANGE THING WHEN I TRY TO USE THE LINK COMMAND IN THE DJIGO APP IT COMES UP CANCEL OR RUN ,YOU HIT OK AND DISAPPEARS WITH NOTHING. PROBABLY NORMAL SINCE DRONE CANNOT CONNECT WITH DRONE. I AM AT THE POINT TO JUST TRASH THIS CONTROLLER AND USE ANOTHER DRONES CONTROLLER TO FLY THIS ONE. JUST WONDERING IF THIS PROBLEM HAS EVER BEEN SOLVED? MAYBE TAKE APART AND DISCONNECT BATTERY SEE IF ANY RESIDUAL LEFT IN CONTROLLER HOLDING UP UPDATE.
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