Unlock iPhone 3GS

The iphone-dev team released a video showing how to unlock your iPhone 3GS. With the release of purplera1n you can now unlock your iPhone 3GS as well.

iPhone 3GS Unlock Demonstration from planetbeing on Vimeo.

from the iphone-dev team

“Our ultrasn0w program uses the at+xlog crash as an injection vector of our unlocking payload — and it does so on the 3GS in exactly the same way as on the 3G!  But this injection vector will be lost if you update to 3.1 using the official Apple IPSW, which updates the baseband.  So stay away from official 3.1 IPSWs until we release the tools that let you update the firmware without updating the baseband.”

A photo guide can be found here