I have a work phone that is on AT&T and an unlocked 2G iPhone running on TMobile. I jailbroke with the 2.0.1 FW and installed the TZones hack. I then did a straight FW upgrade in iTunes to get up to 2.0.2. Because of this my 2.0.2 is not jailbroken, but the TZones hack from 2.0.1 still worked fine.

Now I want to be able to put my work AT&T sim card in the phone and get edge access. Calling works fine, but I think that the tzones hack is effectively blocking AT&T edge access. Since the phone isn't jailbroken I cannot uninstall the tzones hack. Is there any way to swap between the two networks with my current setup?

You can jailbreak your 2.0.2 phone by using quickpwn 1.5.1 RC3, pwnagetool 2.0.3.1. Once it's jailbroken, you can do what ever you need to.

I'm not sure if the tzone hack "blocks" edge access when you put in your AT&T sim.

Originally Posted by dtube

I'm not sure if the tzone hack "blocks" edge access when you put in your AT&T sim.

I'm pretty sure it does, since it basically changes how the phone access the network.

the edge apn changes for each carrier, so you would need to do that manually.

Thanks compkid.
@drekce
I found the apn changer here, you may want to take a look
http://www.unlockit.co.nz/