iphone 3GS Hacktivation?

[shagster40]

Decvice = iphone 3GS 32GB
Firmware = Updated to 4.2.1
Phone State = (itunes logo screen)
Phone Orgin = (UK London)

I am trying to use this phone here in the USA with ATT but even with a activated sim with iphone service it says I have inserted a incorrect sim thats not supported by my carrier. Are there any tools I can use to hacktivate this phone because the person that sold it to me told me it was factory unlocked. I just need to get passed the whole itunes activation process.

Any help would be greatly appriciated.
Thanks

[Cowboy]

Yes you can use the latest version of redsn0w with the ipad bb

[shagster40]

Yes you can use the latest version of redsn0w with the ipad bb

I dont really want to upgrade to that baseband seeing that I would have to use custom firms from that day on. Can I use the redsnow without updateing the BB. And what version are you talking about because I used the version that does the ipad bb update and I just got the ring of death once the process completed.

any ideas

[Cowboy]

Try again honestly is the only way

AS for the unlock part what bb are you on?

[Simon]

If it is a UK phone you may want to contact the carrier and see if they can officially unlock it for you.

[Cowboy]

Isnt it just o2 that will do that or is there others?

[Simon]

Not too sure, but it wont hurt to try. If he can get a official unlock that would be way better than having to update his baseband.

[Cowboy]

True story