Upgraded earlier to 4.3.1 using Redsn0w and now everything seems to have gone completely wrong, had some small problems initially. However, once I got everything working my iPhone 4 boots up fine, but where my carrier should be (Vodafone) there is just a blank space and sometimes "No Service" appears. I've not been able to send messages or make phone calls since. Have tried re-jailbreaking again but nothing changes and have obviously tried restoring using iTunes but that fails towards the end. My general settings tells me my baseband is 04.10.01. Any ideas please? I have no idea what else to do.