hihi,total noob over here regarding jailbreaking.i have already jailbroken my iphone 3g with redsnow 3.0.my is an unlocked set with baseband of 5.11.07.i want to ask if i shift restore to custom firmware 3.1 and somehow my jailbreak is gone,how do i downgrade to 3.0 so that my phone can be jailbreak again?i understand redsnow only support up to 3.o right?