Phantom 3 Advanced, only two days old. I've searched for hours but cannot find anything exactly like I'm experiencing. My controller lights come on, and stay on after pushing the button just once. The rear aircraft lights continuously flash yellow, which indicates the controller is not connected. I successfully updated the firmware on the aircraft, but no such luck with updating the controller. I've tried all methods that I know of. When I try updating the controller firmware through the GO app, the progress stays at 0%. After about 30 seconds, it states the upgrade failed and says "start upgrade". As soon as I click "start upgrade", a pop-up appears and says "not connected". Of note, I had two successful flights prior to this happening, so everything was in good working order when I first got it. All this started after I initially tried updating the firmware when prompted to do so in the GO app. Any help would be greatly appreciated. Thanks!