For all those who don’t know what Blacksn0w is, it’s the ONLY unlock for iPhones out their which unlocks users who have a baseband of 11.05.07. GeoHot, the creator, has just released the unlock to the world.
Here are all the details given by GeoHot:
blackra1n RC3 is also live for both Windows and Mac!!! Clean firmware 3.1.2 and baseband 05.11.07 are recommended.
Updates:
Unlock!!!
Hacktivation
Keep legit activation if activated before running app
15 seconds faster, you’ll feel it
Tiger + PPC support
Click here to download:
Guides:

[...] It’s out!!!! DETAILS HERE Share and Enjoy: [...]
I have so been looking forward to this, in my eyes the best release of the year.
Hey my iphone is not reciving any calls with blacksnow it allows me to make calls but i cannot recieve any, when people call me all they hear is a busy tone. Is anyone havibg the same problem? Can soke one help me??
[...] made for Mac OS X. 2) Is sn0wbreeze a unlock for the Baseband 05.11.07??? No. For that go HERE 3) What devices does sn0wbreeze work for? The iPhone 2G, iPhone 3G, iPhone 3G[S] (Only if [...]
[...] you have an iPhone with 05.1107 (ie doesn’t work with Ultrasn0w) and want to unlock it, use Blackra1n. Share and [...]
[...] of now, with Blackra1n, you can do a tethered jailbreak which means each time you turn on (fully) your iPhone 3GS, you [...]
[...] For this to work you need a jailbroken device on 3.0 or later. To jailbreak your device, use Blackra1n. [...]
easiest jailbreak ever for my iPod Touch worked great the first time thank you very muchfor ur hard effort in keeping our iPods limitless