Did you got a solution for these problem....

Quote Originally Posted by jimjones360 View Post
I have my iphone 3G 4.2.1 w/ 06.15.00 BB installed the latest ultrasn0w from cydia and it will not unlock it just says no service.

(this phone was given to me by a friend)

I believe it was intially hacktivated and SAMS PREF was installed (ive removed that)

i obtained an original carrier sim and used redsn0w to DEACTIVATE it and let itunes RE-ACTIVATE it w/ original carrier sim and then i reinstalled ultrasn0w and im still getting the NO SERVICE error.

any advice would be greatly appreciated

Any help would be appreciated