(adsbygoogle = window.adsbygoogle || []).push({}); Heyy, i just recently got an iPhone 4 and i need to unlock it.
I Looked on YouTube but i haven't found a method that was confirmed working.

Can someone point me in the right direction?

Also, it says "No service" Or Invalid SIM sometimes. so im pretty sure it needs to be unlocked.

Also, if this helps:
Baseband 4.12..01

last time i checked a year ago jailbreaks were out untethered though, im sure there is a working version of tethered now