blacksn0w is an unlock tool by GeoHot for iPhone with baseband 05.11.07. GeoHot released the video of first unlocked iPhone with baseband 05.11.07 in which it was shown that blacksn0w will be available on 04 November.Now GeoHot tweeted that as testing is going great so he is releasing the unlock tool blacksn0w today 03 November.
To install first you will need to run blackra1n (jailbreak) on your iPhone then using an option in the blackra1n as shown in my recent post you can unlock your iPhone with baseband 05.11.07. So, blacksn0w will be available approximately after 7 hours from now at blackra1n.com
