No Service with Tmobile

[sloguy2381]

Hello,

This is my time posting here and I have gone thru a few articles which are similar, however, didn't resolve the issue i am facing.

Product = iPhone 3G - 8GB
Modem FW: 05.11.07
FW: 3.1.2

iPhone works with AT&T. I restored iPhone to factory conditions using iTunes. Once the restore was complete, phone was automatically rebooted.

Once, it was back up I used blackra1n and installed that on the phone, once i had the app on the phone, i used wifi on the iPhone to install sn0w and unlocked my iPhone (wifi off, 3G off, data roaming off, and played around with these settings as well).

Now, when I insert T-Mobile SIM card, the phone can't find any service, however, if the same sim inserted in a different phone (or two) works just fine. Also, after this process AT&T sim card just works fine as well.

I hope I have provided all the details and hoping someone from this community is able to help.

[battlecrushr]

Make sure 3g is off

[sloguy2381]

Thank you, if you read above, it is off.

[battlecrushr]

Do u have blacksn0w instLled