Hello guys! I have this r4 card that my friend gave me. I think it's called wood r4. There is no writing on it exept the r4 logo and the slogan "Revolution for ds". I tried it on my 3ds (with the wood r4 software installed) and it didn't recognise it at all. Maybe it is broken or I didn't install the sd software right or maybe it just doesn't work on 3ds? Please help, Thanks!