I just got this iPhone 3gs please see below:

iPhone 3gs
Firmware version 4.0.1
Baseband: 05.13.04
iboot version: 359.3.2

I jailbreak my phone through jailbreakme.com, and I install ultrasnOw through cyndia. I put my t-mobile sim card in, the phone just stuck on the emergency call screen and wont let me get into the springboard, but i can receive incoming calls...does anyone have the same problem? or know how to fix this? I tried to restore it 3 times, the results are exactly the same...

Thanks for helping!