Unlocking unknown jailbreak method iPhone 4

[xxpink]

Hi,
New to the forums. I bought an iphone 4 from Amazon. It includede a Gevey Sim. Cydia was already installed and jailbroken when the phone came to me. I looked at the info before I started anything but dont remember the baseband...its was 04.(11 or 12) and .01 i think. the iOs was 5.0.1. I was following directions from a video online and it said turn off the phone with the gevey/tmobile sim in it. I did that and restarted..and its stuck on the apple logo now...any thoughts? im at work with no Itunes. and I ahvent even hooked it up to iTunes since i got it at work shipped by the mail and just opened it here.

[xxpink]

After looking around web the 4.11-12.01 is not unlockable with Gevey Sim; And i know it could be unlocked because I researched before buying. So I think the baseband is 4.10.01 not 11 or 12.