Redsn0w is a cross-platform jailbreaking, unlocking, and customizing tool for iPhone and iPod Touch. New version redsn0w 0.9b3 supports the latest firmware 3.1.2. The most recent release before this one was redsn0w 0.8, which targeted Apple firmware 3.0/3.0.1.
redsn0w 0.9 beta3 supports:
All iPhones and iPod touches except the iPod touch 3G
Windows and Mac OSX (x86)
Apple firmwares 3.0-3.1.2
When it’s out of beta, it will support the iPod touch 3G, PPC OSX, and Linux.
If you need a carrier unlock, redsn0w will handle iPhone 2G by itself (by installing the BootNeuter utility). For the iPhone 3G and iPhone 3GS use Cydia after you’re jailbroken to install ultrasn0w (baseband 04.26) or blacksn0w (baseband 05.11).
If you have a late-model iPhone 3GS, or if you have an iPod touch 2G whose serial number begins with “MC” (newer than week 40 of last year), you can use redsn0w to jailbreak but you are currently restricted to “tethered” rebooting. That means you need to connect your device to a computer each time you boot it – so just try no to reboot.
Now everyone will know that the DevTeam and GeoHot are no longer in good terms and in fact shortly after the release of Redsn0w 0.8, the tool to run the jailbreak of Firmawre 3.0, there were many discussions on Twitter between GeoHot and copumpkin, one of the DevTeam members.
GeoHot complained that redsn0w uses the same “hole” and the same exploit to run the iPhone 3GS Jailbreak, copumpkin said that the flaw was the same but the exploit was completely different and created entirely by them. Not trusting, GeoHot asked repeatedly Hash codes (the identity) for the files needed to run the exploit and said that it had not been a good idea to release two programs that use the same “hole” (stealing?).
GeoHot also said, that redsn0w has problems (which is true, some users have reported problems) and so he plans to release a new better version of Purplera1n. It will probably will also unlock the iPhone.
Sn0wBreeze 2.9.6(pwnagetool for windows, supports untethered jailbreak of iOS 5.1.1 for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad and Apple TV 2G)
Sn0wBreeze 2.9.3(pwnagetool for windows, supports tethered jailbreak of iOS 5.1 for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad; untethered for iPhone 3GS with old bootrom; untethered for iOS 5.0.1, iOS 4, iOS 3 supports Apple TV 2G)
Sn0wBreeze 2.8b11(pwnagetool for windows, supports iOS 5, iOS 5.0.1, tethered jailbreak for iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G, iPad, Apple TV 2G; untethered for iPhone 3GS with old bootrom)
Current version is ultrasn0w 1.2.3, download in Cydia (unlock for iPhone 4, iPhone 3GS, iPhone 3G, firmwares 3.0-4.3.3; it supports basebands 01.59.00, 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00)