So, I just successfully jailbroke my mother's 3G with pwnagetool 4.2.1, making it the fourth iPhone I've jailbroken. I followed the steps here: http://www.redmondpie.com/download-pwnagetool-4.2.1-for-untethered-4.2.1-jailbreak-custom-firmware/# including checking "activate" since it will no longer be used for AT&T. So the jailbreak worked fine, Cydia installed fine, I went to install Ultrasn0w, and now the phone gets no service whatever sim card is installed. The bootloader is version 05.09 (G2M3S2), the Baseband is ICE2-05.14.04, and as said the OS is 4.2.1. Is there anything I can do to get a network connection? I've used ultrasn0w all the other times without a hitch, what happened?