are u sure u thoroughly go through this forum?...urm..if u did,surely u will find the answer..
btw, do u know the difference between unlock n jailbreak?


Unlock/Activate = a method to make the iphone working with any carrier other than AT&T.
Jailbreak = forcing the Iphone to accept installing 3rd party application (through Cydia @ Installer)

For Iphone 3G, the only way to unlock it is through 3rd party application called yellowsn0w that can be downloaded through Cydia after u jailbreak it using PwnageTool (Mac) or QuickPwn (PC).

Unfortunately for ur case, u said u have updated the firmware to 2.2.1. Thats means u cannot longer activate ur iphone with other telco than AT&T bcoz it is locked to AT&T. This yellowsn0w im talking about only support up to 2.2 firmware. So, what u can do right now is pray for the Dev-Team (team that develop this yellowsn0w thing,mostly musclenerd) come up with new version of yellowsn0w that support 2.2.1 firmware. For more info : http://blog.iphone-dev.org/

This post has been edited by dzerg: Feb 5 2009, 06:37 PM

im sorry for u my fwen..got unlucky this time...im afraid wat u can do right now is pray for updated yellowsn0w that can be used with 2.2.1 firmware..


This post has been edited by dzerg: Feb 5 2009, 07:36 PM

i guess chrisl_57 didnt even know the existence of yellowsn0w..still using 2.2 turbosim..
or u got problem using yellowsn0w bro?

btw, if TS can even downgrade the firmware, it wouldnt make any different at all since yellowsn0w only unlock up to 2.28..no further than that..

Cheers.