Alright, I'm gonna run this through to make sure what I'm doing isn't going to brick my console.
So, first I'm going to backup my sysnand, then downgrade. My emunand and sysnand are linked, so I'm wondering if after downgrading I'd have to format. Also, the 3.0 launcher can run through the ds exploit right? You don't need to use 2.7?
(I'm running a sysnand 9.2 3dsxl, with a 9.4 emunand, with tons of installed cias) (I also have the update nag for my sysnand)
Edit: I took the plunge, and it worked perfectly. Woohoo! I forgot how much I missed the simplicity of 4.2