And if you read the 3.56 downgrade thread on ngu, and want to try it. Dont. It's bullshit, and completely disgraceful for a forum to keep such a thread open that easily can bricks consoles.
Bricking a console to allow downgrading. Who the f*ck though of that!
STOP! Before you ask questions... READ the first post! RTFFP = Read The F*cking First Post
Yes, A 3.55 "jb" (cfw) is available, no >3.55 "jb" or cfw yet.
Yes, A 3.55 downgrade is available. But not to lower than stock firmware! (What it came with)
No >3.55 downgrade is out there yet.