Please read following content to get more details :
Working list
Supercard DSTwo
R4i gold 3ds
R4i gold 3ds and Supercard dstwo can directly work on 3DS V3.0.05,we have tested our cards
on our 3DS and what you need to do is download the latest firmware (For dstwo,you need
to download the firmware v1.13 and r4i gold 3ds is Wood V1.41,You can download them
respectively here : Wood R4i V1.41 and DSTWO firmware V1.13