I don’t know bc I got it from a guy selling it and he had it modded and when I opened it he has a bunch of roms in it and if I open anything like twilight menu it only has Mario kart ds and some guy said it’s probably fake
I have a modded new 3ds xl and it has 256gb sd card formatted on fat32 and I have about 32gb filled up and supposedly I only have 60k blocks left which is like 6gb and I don’t know why