i bought a R4 for my nintendo ds in china and when i put it into my nds, it didnt have the software in the memory card. i tried to download the most updated version for it, but it still wouldnt work. im to the point where i want to give up. can anyone help me? or is it a bad thing to just buy things in china cause theres a box that keeps popping up saying that it cant read the memory card or something like that. please help!