Right so a friends drone has landed herr , as he updated it and since it wont connect to the dji go app or show video link , since ive had it ive updated firmware on thw drone on thw laptop wich works fine but after trying to update the rc with the drone its not doing it , so um starting to think.it might be the usb connections , have tried numerous leqds , but its not xonnectiong ro the app or to the drone to update so am i right in thinking its the little square that the usb and other connection is sitting in migjt be faulty ? It did work before update?