To introduce you the situation: I have a Japanese O3DSXL; My friend has an European N3DSXL. Both have a CFW. Both are in 11.3 firmware We tried to play online on "zelda triforce heroes", as I expected, we couldn't play together because I have a Japanese copy of the game, and he has an European one. (btw is this reason correct?) So, i tried to install the same game, but the European version of it, and it didn't work either, maybe because I'm playing an European game on a Japanese 3DS (is this also correct?). So, is there any solutions?