I have a 3GS, one of the older ones, which has never been unlocked or jailbroken. It was a gift from an Apple devotee who always has the very latest and therefore didn't need this old thing anymore.
Anyway, how do I unlock it?
Have not tried to look up the bootrom yet, but since my benefactor is an early adopter, I think it must be the old one.
Firmware: 5.12.1
Do I have to downgrade first, and to what? I don't see specific instructions anywhere to do that for 3.1.3.
Thanks in advance for your expert advice.
BTW, I'm not very technical and don't own a Mac. I don't mind paying someone to do this, but the people I've called won't tell me what software or procedure they would use. It's a "trade secret". I'd like to know what they're putting on my phone.
Once you've double checked the bootrom, and confirmed it's the old one, you can use spirit2pwn and snowbreeze/pwnagetool to get to the 4.0 OS if you wanted it.