Why Unofficial ndsinfo.dat?
The reason why the unofficial ndsinfo.dat was started (by smurf) was because the supercard team are really slow at updating there official.dat.

What is it?
the ndsinfo.dat is a small file that tells the scdsone a few thing about the roms on your memory card.

1. english/chinese names
2. release number
3. header id (YILJHiiro no Kakera DS)
4. save size (4kb, 64kb, 512kb, 2mb, 4mb, 64mb, 128mb)