3g lockes

[shua]

i am using 3g 7.1gb,ver 3.1.2(7d11),accidenently up graded to 3.1.3 after restoring found locked.plz help me to unlock it.
thanks

[i.Annie]

its actually 8GB, offiually reportes at least.

Redsn0w 0.9.4 to jailbreak, unlock with Ultrasn0w. That will point you in the right direction. Plenty of guides to show you how (download 3.1.2 ipsw ahead of time, not 3.1.3).