I have JB 3g running on Ultransnow with bb 04.26.08. daft question but do i need to use origional sim (pay as you go O2) then upgrade to 3.1.2 via itunes fist which i am guessing will re-lock phone then follow the blackrain, blacksnow process? also how do you back up the files in itunes then restore them after jailbreaking phone?