I have an IP4 running 4.1, modem firmware 02.10.04, all blobs saved since 4.0. I didn't have any need of unlocking when I updated to 4.1 (I'm on AT&T), so I updated the baseband with the firmware. Now I'm going to Europe in a few weeks time and it would be nice to unlock the phone so I can use a prepaid SIM while I'm over there. Is that possible? If not, should I just update to 4.3.3 using iTunes (the "normal" way) and jailbreak again? Thanks!