The question is, is it factory unlocked or software unlocked? Judging by what you've said, I'm pretty sure it's a software unlocked from the US. If it's factory unlocked, you're always safe to upgrade as the factory unlocked phones cannot become locked. Factory unlocked phones cost a little more, but they are well worth it. If it's software unlocked, you will need to restore to factory settings and upgrade to 3.0, then jailbreak and unlock with ultrasn0w.
__________________
And all the science, I don't understand. It's just my job 3 nights a week.
|