I bought this R4 a few weeks ago and everything was fine (except for my DS sometimes not recognising it) but for the last few days, while i'm playing it makes that popping noise your DS makes when you turn it off and then it freezes. I was playing Animal Crossing on it the other day and it froze after selling some stuff, then yesterday i was playing Animal Crossing again and it froze while saving! then last night i was playing it again, just running around and it popped and then froze again. And it's not just Animal Crossing. It happened on an incredible machine ripoff and a Kirby game too. What's wrong with it and how do i fix it?