Hi all, I am brand new to this board and hoping someone out there can answer my question. I just got an r4 card with games on it for my son. I know the person I got it from so the card is not fake. I gave it to my son to play and he has been playing it for the last four days and now, when he turns it on it is frozen when you can pick the games. It loads fine. I tried it in my daughters ds and it worked. So I tried it in his and it did the same thing (froze after loading). I tried it back in hers and it won't work now. I see all this stuff about proper firmware(don't know what that is). Is this card toast or is there something I can do without losing the games on it. Hopefully you can help this Dad out and make a little boy happy. Thanks in advance.