I completed this mod, in conjunction with a language mod. The eng/jp switch works fine, but somehow this one does not. When I flip the switch, the game will not boot if it is one position, and will only work in the other. If flipped during play, the game shuts off entirely. Now, I'm pretty sure if everything was fine, I would at least get some sound, or a black and white picture or something on my TV. I can take a picture of what I've done if it will help any.