The unlocking method which uses a similar, unpatched exploit found in the iPhone 3G has been streamlined. The new App called Purpelra1n, makes the unlocking process much easier and fixes previous issues with Purplesn0w.

Wifi fails? Battery fails? Unlock fails? You need purplesn0w, the geohot 3GS unlock solution. Now I know you here a lot about different colors of sn0w, but I’m here to tell you why purplesn0w is the best. First off, what is purplesn0w? It’s a soft unlock for your 3GS that I’d actually use day to day. It’s not a daemon that takes any resources, and it doesn’t add a task to your baseband. It’s very close to a true unlock.