For some reason nowadays my R4 Flashcart doesn't work as well as it use to. For some reason there is a connection fault, where despite being inserted properly, the DS doesn't recognise a cart being in the slot. Interestingly, if I try to push the cart in as far as it possibly goes, it boots and works like normal, but if I let go it freezes like the cart has been removed from the slot. If you have this problem, I have found an easy workaround to this problem, TAPE! Just push the cart in as far as it can go and tape over the slot and it works. Sadly you would have to retape it everytime you want to change a game, which isn't a bother to me since I have a DSi to play DS games and I can play GBA games on my DS Lite or GBA SP. Just a little note for people who are interested.