I guess he's saying emulate the R4 by putting the R4's firmware files on the 3DS's main SD card?english when
Finally some intelligent insight.This cannot work unfortunately. if it was this easy, it would have been done ages ago. the r4 card has extra data on it to make it seem like a DS card to the console. simply putting these files on the SD to your 3ds will not work as they will be treated as files and ds games wont run like that