Supercard dstwo firmware has been updated to V1.16, see post here: http://www.wiihacks.com/ds-dsl-dsi-3...4-2-0-9-a.html if you haven't updated your dstwo, your card can not worek on the latest 3DS firmware V4.2.0-9, i have made a video to tell you how to update the DStwo for 3DS V4.2.0-9 step by step. You can just update it in a few mins.
Recommend you update the DStwo in a DS Lite console.
here is the video
Do yourself a favor, don't buy crappy flashcarts.