Hello, So I have a Mini2 and I was flying it by the ocean in Oregon and I had it in a case around my shoulder and a big wave knocked me over and salt water entered my carrying case and the drone survived but the controller got some saltwater in it and then quit working completely so I ordered a different controller and when I went to pair the new controller to the drone it said that I had to upair the old one but when I took the steps to do so, it wouldnt let me unpair the old one without having it on, but the old one wont turn on to let me unpair it, any suggesstions on how to unpair the old one and pair the new one? The new one is the exact same as the old one.