Acekard 2i Working on Nintendo 3DS in DS mode only; you can only play DS or DSi games at the present time.
http://pixelgeeks.co.uk/
How To:
no need to buy a new one but you do need access to a ds lite or dsi, download the update file at acekard.com/download.php put it on your acekard's microSD, run the update file on a DS Lite or DSi if the HW say 8181 then press (A) to update if it say 4141 do NOT update as this will brick your card. Its not as complicated as it sounds :)