I'm trying to help a friend find out if he can JB his iPhone 3GS. His numbers are 87003. So that's 3rd week 2010 which means he has a fixed bootrom...? If he does have a fixed bootrom what are the drawbacks? I read he's going to have to plug his iphone in and "re-jailbreak" every time he reboots? He is running OS 3.1.3 We found a tutorial on iClarified using redsnow to JB his iphone.