I connected twice to Xbox live with it before and now I can't anymore. I've followed all the "instructions" that most people online have posted and still nothing. I keep getting the IP address error message on my console. What am I doing wrong/ differently? The Sprint 4G/3G is different than most aircards. I think I need someone who has done this with my exact hardware. Sprint 3G/4G USB Modem U300. HELP!!