For all those who took the liberty of running the ridiculously simple JailbreakMe 2.0 installer over the weekend (before having second-thoughts based on the security hole it exposes), the accompanying package to unlock your iPhone to run on any GSM carrier worldwide has dropped.
Ultrasn0w 1.0-1 is the first baseband unlock for iOS 4 phones, and works with iPhone 4s, 3GSs, and 3Gs. It might also work with 3.x devices, but it’s unclear from the documentation. Gentlemen, head for T-Mobile (at EDGE speeds)!
Via Engadget