Geohot has released his BlackSn0w unlock for the iPhone 3G and 3GS.
"blacksn0w is the unlock for the latest 05.11.07 baseband, and will also enable official tethering. blackra1n, a jailbreak for 3.1.2, has been updated to RC3, with hacktivation support, 15 second speed improvement, Tiger+PPC support, and installation of the latest blackra1n.app."
You can find instructions on how to use blacksn0w to unlock your iPhone here: Windows, Mac.
If you have already jailbroken using blackra1n, run the application again. You will see Icy replaced by an option "ra1n". Install this to upgrade your blackra1n application. Run the blackra1n application again. This time you will see "sn0w". Install sn0w to unlock your device.
Wow! Super fast, super easy.. Amazing work.. Now if only iphoneunlock.com would refund my money then I'd be able to donate.. Will soon though. Thanks sooo much!
everything went smoothly after the unlock. yet my iphone kept restarting after i tried to reset by pressing "Erase All Content and Settings" due to troubles connecting to wifi. any help is greatly appreciated!!
Thanks bunch Geohot, i just jb and unlocked my phone and everything went smoothly. Process is so quick i couldn't believe my eyes. Props to you Geo, i will be donating for sure. Please don't pay for the unlock its free thanks to Geohot and his unlock software BlackSn0w!!!
Geohot --- You are the man this is so easy and worked first time as expected, i am now using a very popular network in the UK " not o2 " Once again that was awesome, i will drop you a donation for your efforts..
Highly recomended
Thanks..