Available In: Cydia

Price: Free

There is an update to ultrasn0w, iPhone software unlock, to version 0.8. This version of ultrasn0w is said to work on the iPhone 3GS according to MuscleNerd, a Dev-Team member.

Things to Note:
    • “Ultrasn0W 0.8 (incl. 3GS support) (see Cydia).”
    • “ultrasn0w is now 3GS friendly! First cross-platform carrier unlock, thanks partly to Apple Repo details at http://is.gd/1pRGL.”
    • “The main 3GS ultrasn0w glitch on hacktivated devices is: need to do Settings->General->Reset->Reset Network settings once.”
    • “If ultrasn0w already works for you, 0.8 won’t add anything new. This 0.8 is mostly for 3GS users or 3G outliers.”!–more–>

That means that the iPhone 3GS is now unlockable. All you need to do is go into Cydia and install ultrasn0w 0.8. If you are on a hacktivated device make sure you follow the instructions above.