Hey all, I upgraded my iPhone 4 from a jailbroken, unlocked 4.0.1 state (jailbreakme.com) to 4.1 with PwnageTool 4.1.2. I installed ultrasn0w after the jailbreak and am getting service from AT&T. I am not able to use 3G though. The status bar indicates I have 3G, but when I go to load a webpage, I get a status indicator next to the 3G icon but nothing loads. Eventually, I get the "Cannot Open Page - Safari could not open the page because the server stopped responding" error. I have reset my all my settings and network settings, but that has not helped getting 3G working. In Settings -> About I am connected to the AT&T network, running version 4.1 (8B117) of the OS, Carrier is marked as "Not Available" (issue?), and my modem firmware/baseband is 01.59.00. Kind of stumped. Couldn't find anything online about this. Help? Thanks!