I just helped my friend convert his Japanese Classic 3DS to run thru CFW and we just noticed some peculiarities...... For example Tekken Prime 3D just refuses on run on his system while there are no issues on my US 3DS system. And then in games like Resident Evil Revelations / Mercenaries and Castlevania, the games automatically run in Japanese language, while in my system they automatically change to English. This is especially problematic in Castlevania because there's no language region settings whatsoever in the game. So I'm thinking of possible solutions, the fastest solution seems to be changing the region of the CFW using 3DS system, but this seems to be impossible for me at the moment because I lack the technical knowledge. The other solution that I could think of is possible removing the Japanese language from the games. (Or replacing them with the US language files.) withe the bonus benefit or lowering ROM sizes? Can anyone help me in trying to start up my research on doing this stuff?