I know there's been a lot on this subject already, but I'm having some problems. I jailbroke my iPhone 3g 2.2 yesterday and everything went very well. But after i downloaded a few themes/apps, it crashed. so i turned it off and attempted to turn it back on, but it wouldn't get past the pineapple logo. eventually, i put it into "Recover" mode, as it was the only way for me to turn it off. This morning, i restored it to the custom IPSW, and everything went back to working, apart from a few missing apps which i re-downloaded. The only downside however, and it's kind of a big one, was that i didn't get any reception, even after unlocking the SIM card, and it said i didn't have a carrier either. So I restored back to the original 2.2 firmware, and it's working fine so far. Has anyone had similar problems? If you have any advice it would be great appreciated.