I am on 4.2.1 jb with greenpoison. It is very jerky and respringing often causes a reboot. I want to got to 4.3.2 and jb with but told it's not super stable so am now thinking I will just stay on 4.2.1 but use redsnow instead of greenpoison. Can I just use redsnow over greenposion? If not when I restore (this is my main question) will iTunes make me update to 4.3.3 or can I restore to 4.2.1 then jb with redsnow? Thanks