Robin Hoods Playground

released by geohot or as he goes by on twitter @geohot

blacksn0w is a free unlock for the latest iPhone 3G and 3GS
blackra1n is a super simple jailbreak used to install unlock


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


blacksn0w is also available on Cydia,
requires firmware >= 3.1 and baseband 05.11.07

iClarified has made some nice tutorials:
Windows
Mac

Can I unlock my iPhone even though I updated to 3.1.2?? Its already Jailbroken I just want to unlock it.

yeap

Wayhey just got an iphone and this blackra1n seems pretty easy. So i take it i need to update to 3.1.2 as i've just checked the version and its saying 3.1 so i thought i'd get the experts opinion before i went any further as there seems some confusion on certain sites? Oooh this is taking me back to the psp days for some strange reason.

update your phone and use the jailbreak software. it's crazy easy. . .

Funnily enough i've just gotten an itouch cheap (2.2.1) and used Quikpwn on it. Fantastically easy and no having to rejailbreak if its turned off which is the only thing stopping me putting Blackra1n onto the iphone 3gs one ive got as im often away from the pc for days and im always forgetting me chargers . Hmmm might wait a bit. Massive thanks for the reply though iamwatt.