I am also using R4 card for playing games in Nintedo DS and also stores some other stuff but I never face such kind of problems. You just have to extract firmware and some game on this card and you can play games. I think your card is not working properly.
I am also using R4 card for
I am also using R4 card for playing games in Nintedo DS and also stores some other stuff but I never face such kind of problems. You just have to extract firmware and some game on this card and you can play games. I think your card is not working properly.