[Lucifer]

Originally Posted by Yuki

DS model shouldn't make any difference...

It does since the DSi has extra features... and there are two different types of R4 flashcarts in general.. well there're many.. a DS/DSLite one and a one for the DSi.. the R4DS and the R4DSi or just R4 and R4i as they're known :P
I don't have the DSi flashcart program, and the black and white are DSi enhanced games.. soo yeah the basic R4 wont work for em. Plus certain anti piracies built in make them have to be altered before they can be used, like with patches, or cracks..
Certain flashcart types can get around it, but others can't.