
Now, before you get confused and start mixing up developers, hacker groups and software, let me clear the confusion if any exists: Purple sn0w is developed by George Holtz, the same guy who brought us purple ra1n. The Dev-team brings us widely known pieces of work such as yellow sn0w, red sn0w, and ultrasn0w (3GS support). Why ‘ol Georgey boy picked purple sn0w isn’t too hard to guess. Still, you have to admire his determination to do his own thing…right? In regards to purple sn0w, it is an iPhone 3GS software unlock that accomplishes the dirty deed of unlocking your precious iDevice by patching a mere 3 tiny files without running any extra fluff to slow down you device or clutter it up. In George’s own words:
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. All it does is patch three files, CommCenter, lockdownd, and your wildcard activation plist (which you need, activate w at&t sim first, no hacktivation support yet). That’s it, no other files are installed.
So there ya have it. For more info on purple ra1n or purple sn0w you can check out George’s Blog.
Source: Geeky-Gadgets, The iPhone Blog