ok so i decided i would give my jb iphone 3g on 3.1.3 that i bought used a clean start. I decided to dfu+restore which i have done many times. i also decided to upgrade to ios4 while restoring. apple gives me a popup that says there upgrade server is down. i am on itunes 9.2 also and had it unlocked on tmobile. i got impatient and used my dads mac and he didnt update to itunes 9.2 yet and it let me restore. but now i cant activate it because my sim is with t-mobile. it is fine, just inactivated so i cant use it. i restored to 3.1.3 how can i hacktivate it? i tried using redsn0w, but for somereason redsn0w wont accept my ipsw. can i use pwnagetool 4.0? i'm still confused on how to use it, i dled the ******* and opened it and it just opens up the internet and says its going to download and then downloads the exact thing i just opened. gosh i feel like an idiot...sorry for the wordy post.