none, update through your sysnand after you update through emunand (make sure to enable tubedns). permanent cfw is now a thing.
tbh you'd be a fool to take the word of anyone on this forum. the official guide hardbricked my o3ds back when it firsrt came out.
heres some advice: all the tuts here are shit. just follow your heart and update. or dont. its your choice, really.
So you're just a dumb who bricked your 3DS without knowing what was doing and now just wanted to f** others ?
Don't listen to this guy, he's just crying because he doesn't know how to downgrade even reading a tutorial.