Jailbroken but cannot Unlock

[DANG_OC]

Hello, can anyone help?
I have the following:

3G iphone, version 4.0.1 (8A306), Modem 05.13.04
3GS iphone, version 4.0.1 (8A306), Modem 05.13.04

I've used blackra1n to jailbreak it, but I don't see the cydia app to unlock.
I want to use T-Mobile and need help.

thanks in advance.

DANG_OC

 

[big9erfan]

You need Ultrasn0w

 

[rdiddy_25]

Search for ultrasn0w in cydia. That will unlock ur iPhone. btw, that's a zero.

 

[jeffnucci]

How in the world did you use blackra1n to JB iOS 4?

 

[ctt1wbw]

I'm interested in this too. You have to jailbreak to unlock?

 

[uhanrodric]

http://forum.tipb.com/iphone-jailbreak-unlock/195355-jialbreak-matrix-all-idevices.html