Geohot released blackra1n (jailbreak) and blacksn0w (unlock) for the latest firmware/baseband combo on 3G and 3GS iPhones for both Mac and Windows platforms!
Features of blackra1n RC3 :
– Jailbreak / Unlock
– Hacktivate or legit activation
– All Macs (Intel and PPC) and windows
– (Possible) Tethering option enabled

UPDATE : If you have 3.1.3 iPhone 3GS + 5.11.07 baseband and if blackra1n doesn’t work, try blacksn0w RC2 which can be installed by adding http://cydia.pushfix.info into Cydia sources. Please post a comment if you still have problems unlocking your 3GS.

Step by step instructions : …

Geohot did it again – the impossible! He hacked into Apple’s most secure baseband till date – 5.11.07 is now successfully unlocked and will be ready for general consumption come November 4th, 2009! He gave us 3.1.2 all device jailbreak and now blacksn0w! This kid sure is awesome – all props to Geo, the man!

Update : Mac version is now released too! Download it here. I prefer Dev Team’s solution cos’ we can preserve the baseband fro unlock!
Geohot released a Windows version of jailbreak only tool for iPhone 3G, iPhone 3GS, iPod Touch 2G/3G running at 3.1/3.1.2 firmware. Before even thinking about this jailbreak program, read this important warning over and over!
Blackra1n won’t Unlock 5.11 baseband. It just jailbreaks and it won’t hacktivate. This translates to the following :
You can use this program ONLY if you have an official iPhone contract and you don’t …

UPDATE : iPhone 3GS has a different security feature which disables it from using any other firmware rather than the latest available. So, if you still need Unlock and Jailbreak, custom firmware (look in categories) is the only option we have. The following article is not recommended anymore. Thank you.
Geohot rules yet again! He was the one to have unlocked the iPhone first generation phone back in 2007 and now, he is back with more! This time it is iPhone 3GS that is unlocked and jailbroken by the hacking maestro …

Update : iPhone 3GS is jailbroken and unlocked @ http://ilikemyiphone.com/wordpress/2009/07/03/jailbreak-and-unlock-iphone-3gs-using-purplera1n-by-geohot-simplest-jailbreak-tool-ever/
Geohot has done it yet again! He managed to break the chain of trust which means he broke into Apple’s territory on the iPhone 3G S. As soon as the iPhone 3G S is jailbroken, that signals an unlock solution in the waiting since both the 3G flavors of the iPhone share a similar baseband 4.26.08! The ‘S’ in 3G S which stands for Speed can now be experienced by the entire jailbreak community soon!
If you have what it …

UPDATE : No more tweaking with sec packs and command line hackery! A sit-back-relax- and-let-it-do-its-magic guide is released 🙂 It is so easy a 6th grader can do it!! Unlock iPhone 16GB /1.1.3 OTB/ 1.1.2 OTB 🙂
What took iPhone Devs months took GeoHot hours to find a true Unlock! It is not based on JerrySim baseband downgrade method but a lot more straightforward!! GeoHot hints that this can be applied to 1.1.3 OTB iPhones too, so hold your breath! Come Sunday and everyone can flash their iPhones with …