I'm still kinda a noob at this whole CFW thing. I've two Old 3ds. One running 11.0.0-33 and one running 10.7.0-32. Can I install a CFW on one of those. I also read something about downgrading a 3ds with another 3ds. Is it possible to downgrade the 11.0.0-33 one with the 10.7.0-32 one?