Originally Posted by longshot
I will answer this as best as I can as i am no iPhone expert but the phone was unlocked with sn0wbreeze and was already running 3.1.3 when I got it and I used a sn0wbreeze tutorial to unlock and jailbreak it.
If that's something that's is not possible then I am confused because it is running 3.1.3 on T-Mobile no problem.
My mistake. This is the 2G, so it has an older 'base band' therefore upgrading it to 3.1.3 FW won't remove the unlock. If you were to upgrade the base band that would 're-lock' the phone to AT&T [or whatever carrier] not letting you use it on Tmobile.
In other words, its good to go.
Whats your best price, shipped to Canada?