Today 11/03/2009 is a sn0w day. GeoHot is releasing the blacksn0w today, so be ready to get those calls which you missed. blacksn0w will be live at Noon EST, @t blackra1n.com. blacksn0w is the unlock for the latest iPhone baseband 05.11.07.

How to unlock your iPhone:

If you are a loyal blackra1n user who kept the blackra1n.app on your iPhone, run it. You will see Icy replaced by an option “ra1n”. Install this to upgrade your app. After upgrading, run blackra1n.app again. You will see “sn0w”. Install this, and enjoy your unlocked iPhone.

If you are new to the scene, just looking for an unlock, finally ready to upgrade to 3.1.2 and the accompanying baseband, willing to restore for the latest and greatest, or stuck on the “Connect to iTunes” screen, you are in luck. Jailbreaking and unlocking have never been easier. Go to blackra1n.com, click on the logo corresponding to your operating system, run the app, and click “make it ra1n”. When your phone reboots, you’ll see blackra1n.app. Run this, install blacksn0w, and enjoy your unlocked iPhone.

If you jailbroke using pwnage or deleted your blackra1n.app, you are in luck too. Sometime later in the sn0wday, blacksn0w will be added to Cydia, and instructions will be posted on GeoHot’s blog.

If you are on a 2G iPhone, blacksn0w isn’t an option for you. ButBootNeuter is, a completely free permanent unlock for your 2G. Of course, blackra1n will work great, and even hacktivate for you.

If you have been getting 404 errors when downloading from blackra1n.com, first off, be sure you use the links at blackra1n.com If you are, something is blocking your http referrer.

Via GeoHot’s blog