Hey, so my dad made a flashcard when i was younger for my now sold nds. since then ive bought a 3ds (that ive recently modded) and the flashcard doesnt work anymore. my question is, did the flashcard get blocked, do i need to download something for it to work or is it just totally useless now? also i dont know how when or with what my dad made the flashcard i just know there were a ton of games on there. recently ive been thinking about a specific game on there i always played and its driving me crazy bc i cant find it anywhere and the solution would be the flashcard. i asked my dad about it once and he said something like the flashcard was made specifically for that nds but i have no clue and also very little knowledge on this subject.