Redsn0w is an alternative jailbreaking and unlocking tool to blackra1n for both Windows and Mac. In addition to the announcement of PwnageTool port for both Windows and Linux, MuscleNerd has also confirmed that iPhone Dev-Team has found the lost code of Redsn0w and that now they are going to update it to work with the latest iPhone 3.1.2 firmware.
yay, managed to recover the long lost source code to redsn0w ..will port it to 3.1.2FW if there’s any interest (mac+win+linux)
For those of you who don’t know, Redsn0w is one of the most popular cross platform and cross device jailbreaking and unlocking tool for both iPhone and iPod touch. Redsn0w may not be as fast as blackra1n but for those of you who are having problems jailbreaking with blackra1n may give this tool a shot once it is available for download. It also enables users to personalize firmware’s with customized boot and recovery logos. Unfortunately, Redsn0w 0.9 wont be able to resolve tethered issues with the new bootroom version in iPod touch (3rd Gen) and iPhone 3GS.
UPDATE 1: Redsn0w 0.9 for Windows and Mac is LIVE! Follow the complete step-by-step guide posted here to jailbreak iPhone 3.1.2 firmware using Redsn0w 0.9.
UPDATE 2: redsn0w 0.9.2 is now available and can be downloaded from the link here.
UPDATE 3: The iPhone DevTeam has now released redsn0w 0.9.3. This version brings IPCC tethering hack for iPhone 3G and 3GS only. Download links can be found here.