Jail braking in your case wont effect AT & T service. Majority of people had succeed in jail breaking / unlocking.
Ensure that you have 3.0 FW for your Iphone as readsn0w wont detect 3.0.1. (you need to point readsn0w to 3.0 it will jailbreak)
G00d luck
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Thanx * Rgds,
Girish Kumar
Last edited by gkscit; 08-22-2009 at 01:00 PM.
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