NDSi.nds on your 3DS. Remember that for some carts, the replace will not work but there isn't a harm in attempting. Official game carts, or flash carts? Just curious, but are the DS and 3DS game carts straightforward to pry apart, with out breaking any tabs off? After updating it with success, your r4i gold 3ds can support the most recent system. Please learn readme.txt connected intimately before updating. Also i've read something a couple of Metroid icon, mine has a Halo ring or something lik...