I'm buying it off the shoptemp site, and it leads me to gameplayfun's site. It says its pre-updated for 3ds compatibility.
http://www.gameplayfun.com/Acekard-2i-4G-p/a2i4.htm
I have a feeling I bought one that isn't compatible for the 3DS 2.1-0.4u, can someone confirm it? Or what can I do It still hasn't arrived and i still haven't gotten a shipping confirmation for that matter but I put down money on this and now I'm nervous that I got gipped.