I've had my 3GS since the day they came out, so have had my ECID in Cydia and always had an untethered jailbreak.

However, the phone broke and I have sent it back to Apple Australia. They have posted the new one. Do you guys think it will still have 3.1.2? I would imagine that Apple Australia have a lot of old stock lying around...

If it does have 3.1.2, the best I can hope for is a tethered jailbreak, am I correct?

And if it has 3.1.3, I'm screwed and may as well sell it?