iphone 3Gs activation without update?
One of my friend bought me a iphone 3gs 3.1.2 from ebay in USA. I don't have any experience about iphones. It is brend new phone.Unlocked by software.
When he turned on the phone, it asked for activation.
Is it dangerous to activate it with itunes ? Maybe it can update the phone to 3.1.3 directly then I can loose the "unlock" and won't be able to use my carrier's simcard again?
If it won't be dangerous to activate it like that, do I have to use my own carrier simcard while activating or AT&T simcard?
Do I have to take a shsh record before activation?
Any other way to activate it?