As far as I can tell the SX teams site is down, if you're booting stock sysnand without any modifications you "should" be fine to connect to the network.
As far as setting up the custom firmware you'll probably need to end up using an alternative bootloader (look up) SpaceCraftNX
It looks like on the software side the attack vector is well understood, I wonder if there's anybody with access to hardware schematics of the chips as well....
Hey everyone, new here I'm a software developer that recently got into the 3DS/GBA/Switch modding/hacking scene! Look forward to seeing how I can contribute to the community.