Hello family! This is my very first thread. I've been reading here for about a year, but I never made an account because I never needed it. You're a great community, and I have a little ¨trouble¨ Just today I bought a 3DS which happened to have the version 2.1, and a friend told me that if I introduced certain game cartridges, I could give it 4.1-4.5, and so I could CFW it. My friend sended me a list of games which I happened to not have (I just have Pokémon X and Pokémon Alpha Sapphire, and a friend could give me MK7). Those games would upgrade my 3DS to 4.1-4.5, and I don't know if MK7 will do the trick. Another friend also have Gateway, and he could provide it to me if I ask him, but I don't know if I can do anyrhing with a 2.1 3DS and a Gateway. I also want to know how much will upgrade my 3DS the MK7, and how can I look how much will upgrade each game. Thanks a lot! Keep up the great work!