I tried to find this answer everywhere but I would like
to know if I already have a an AT&T contract and sim
when I just jailbreak (no unlock) (redsn0w 0.8) will I still
have AT&T service?
My iPhone is:
iPhone 3g
firmware 3.01
AT&T
*if u have a % rate of success please supply*
thanks in advance

doing jail breaking / unlocking you will be still able to use ATT in addition to other unofficial SIM. Majority of persons are having success in unlocking

Okay that's great with succeed thanks another question is can I just use redsn0w or will I have to use ultrasn0w too for AT&T?
Thanks for ur reply and thanks for others future replys
srry I'm a total n00b to this

please visit iclarified. you will have step by step guide on how to achive this

Ok thanks il check it out hopefully my phone won't become a pretty paperweight

I had a AT&T phone yesterday, I did the
redsn0w 0.8 - Ultrasn0w proces with succes

If you are uncertain (as I was)

read the post: 3G iphone 3.0.1 - unlock, best way?
and then follow every step in the tut. of iClarified , the key is: use the correct FW-versions!
If you do that the chances are very low that you have a problem described on this forum.

Succes!