PLEASE HELP, no service after jailbreaking

[fiskdog]

I just JB my iphone 3G and it says I have no service. I am in the middle of the restore (you have to do that after jailbreaking right?) but it says that I have NO bars. what should I do? how can I unjailbreak it if I need to? thank you

[IphoneTony]

just go back to itunes and restore if you have to

[djentee]

if you used Pwnage to JB, re-do the whole thing but make sure you uncheck option "activate phone". also, in iTunes restore as a new phone. hope this helps. GL!