Hello, I am having some issues with my F900BT. First I had nothing but lights on the side with buttons and a black screen. Then I found the 3.1 fix once I installed it as directed I got to the screen to select language and then to the Pioneer screen. That is where I stand. I need help. Something odd that I found is my unit says F900BT on the case but I just discovered that in both test mode and in blue screen it says F700BT, not sure what this means please give me some good advise.