Update (08072009): Newest redsn0w now jailbreaks all iPhones and iPod Touches, this includes iPhone 3GS as well!

Just a few days later than we had anticipated due to a few problems encountered by the iPhone Dev Team but ultrasn0w has finally been released. The latest iPhone OS 3.0 unlocking tool for iPhone 3G which was originally known as yellowsn0w has now been renamed as ultrasn0w.

It is very simple to use, in fact you don’t need to download it from a computer, all you need to do is have your iPhone 3G jailbroken using Pwnage Tool or redsn0w so that you can have access to apps from Cydia, from there simply search for ultrasn0w.

Read carefully the instructions which have been given out by the team…

1. Ensure you have upgraded to iPhone OS 3.0
2. Jailbreak your iPhone 3G using redsn0w or PwnageTool (this will also install Cydia/Icy)
3. Run Cydia or Icy
4. Please add the repo repo666.ultrasn0w.com to Cydia or Icy. That last “o” is actually the number zero “0”! If you use the letter “o” you’ll get an error.
5. Search for ‘ultrasn0w’ in cydia or icy and install ultrasn0w
6. Reboot your iPhone 3G
7. T-Mobile USA users should disable 3G before using ultrasn0w
8. Enjoy

All the download links for the Pwnage Tool and redsn0w can be found here. Unfortunately, there is no support for iPhone 3GS at this point. But watch this space!

Update (03072009): A non-iPhone Dev Team jailbreak tool for the iPhone 3GS has been released allowing you to use the ultrasn0w for unlocking purposes afterwards!