It looks like Nintendo simply didn't have this in their test labs when they were creating the blacklists :) simply works on 3DS without any firmware updates needed. supposedly the first kit to publish the proof that they have hacked the 3DS only 24h after it's release - respect! At first they released a video proof - files were published after Euro 3DS come out to make sure that Nintendo has no chance of blocking the AceKard 3. They were the first to get a working DSi card to the market and also now one of the first teams to crack the 3DS.
AK2i with a Nintendo 3DS compatibility update is also known as AceKard 3. So with this card you get to play not only the huge DS / DSi game catalog, but also most of the classic video games form older consoles and GBA + SNES roms that other R4 cards can not handle. And just like other R4 3DS cards it can run NES, GB, GBC, Atari, SEGA and many more classic games on DS Lite, DSi and 3DS. SuperCard DSTWO costs more because it has an additional CPU in the cart that adds the extra processing power needed for the built-in GBA emulator, MAME and SNES emulators and DivX / HD Video player. SC3DS Nintendo DS rom compatibility is as good as it gets, with extra features like Real-Time Save game support (quick save / restore to any place in the game), Multiple Save Slots, Walkthrough / Game Guide support (pause the game to read a guide and continue playing), and other extras. If you can afford it this is the best, most feature rich DSi / 3DS flashcard on the market. SuperCard Team as predicted was able to update the SCDS2 firmware to make it into a Nintendo 3DS compatible SuperCard 3DS (SC3DS). They are not true N3DS cards as they run in DS-MODE on the 3DS and so they can be used to play DSi and NDS roms on the N3DS and are not yet compatible with 3DS ROMs. There is already a whole army of R4 DS NDS ROM cards that are compatible with Nintendo 3DS.