I bought an N95 in London about a year ago. T-mobile UK told me the phone was not locked and that I could use it in back in the US. Well, the phone is locked so I couldn't use it with my US sim card. I payed for the unlock codes from a website online but none of them worked, and after five tries, the phone hard locks, and no longer gives you that option. So, I bought a turbo unlock sim card that allowed my phone to work for the first time in a year. However, when I updated the firmware to the 31.0.017 version that is current, I no longer can recieve a signal from my network. The sim is working because I am not getting the "invalid sim card" message. But I can't get coverage. It worked perfect until I did the update. Please help. Can I maybe restore the original version of firmware or something.