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x999x · 10-05-2007, 01:08 PM

Originally Posted by seanrobb

This DOES NOT work with 1.1.1. you cannot downgrade to 1.0.2 from 1.1.1 and expect to use a T-mobile or any other GSM wireless company other than ATT. (due to a baseband firmware update that happend in 1.1.1) You can downgrade 1.1.1 to 1.0.2 and use it for everything else that does NOT have to do with a wireless carrier (AKA: text msgs, calling, voice mail, edge network). And for all the questions about a native 1.1.1 downgrade, yes, you can do this, I did it with my other iphone I bought just the other day with 1.1.1.

If you have a TurboSIM or SuperSIM you can use any carrier, it's a feature of the SIMs as they are quite expensive actually. They lie to the phone and tell it that it's still an ATT SIM basically, like a piggyback.

10-05-2007, 01:08 PM	#7 (permalink)
x999x Join Date: Aug 2007 Posts: 1,787 Thanks: 1 Thanked 21 Times in 8 Posts	Originally Posted by seanrobb This DOES NOT work with 1.1.1. you cannot downgrade to 1.0.2 from 1.1.1 and expect to use a T-mobile or any other GSM wireless company other than ATT. (due to a baseband firmware update that happend in 1.1.1) You can downgrade 1.1.1 to 1.0.2 and use it for everything else that does NOT have to do with a wireless carrier (AKA: text msgs, calling, voice mail, edge network). And for all the questions about a native 1.1.1 downgrade, yes, you can do this, I did it with my other iphone I bought just the other day with 1.1.1. If you have a TurboSIM or SuperSIM you can use any carrier, it's a feature of the SIMs as they are quite expensive actually. They lie to the phone and tell it that it's still an ATT SIM basically, like a piggyback. __________________ The First Rule of Fight Club...