Now you can jailbreak iOS 4.1 final version on iPhone 3G and iPod Touch 2G on Windows with Redsn0w 0.9.6. Previously Redsn0w 0.9.6 was only available for Mac OS X users but now iPhone Dev-Team has released its windows built.
This is a beta release of redsn0w for the iPhone3G and iPod Touch 2G at FW 4.1 or 4.0. It uses the same pwnage2 DFU-mode exploit that we’ve been using since the 2.x days. It does not include the SHAtter exploit developed by pod2g. Nothing new is revealed to Apple with this jailbreak.
Note: if you have an “MC” model of the ipt2g, your 4.1 jailbreak will be tethered…sorry! (Consider rolling back to a FW supported by jailbreakme.com or spiritjb.com)
If you rely on an unlocked iPhone 3G then DO NOT use this tool otherwise you may loose your Ultrasn0w unlock forever. Though Redsn0w will jailbreak your iPhone 3G on iOS 4.1 but it'll also update your baseband to 05.14.02 which is unlockable using the current version of Ultrasn0w. If you are on official carrier or an iPod Touch 2G user, you may follow step-by-step guide here to jailbreak your device with Redsn0w 0.9.6. [via iphwn.org]
Download Redsn0w 0.9.6b1 for Windows | Mirror (9.71MB)
Update1: Jailbreak iOS 4.1 on iPhone 4/3GS/3G, iPod Touch 4G/3G/2G & iPad with Redsn0w
Update2: Jailbreak iOS 4.1 on iPhone, iPod Touch, Apple TV & iPad with PwnageTool 4.1
Update3: Guide to Jailbreak iOS 4.1 & iOS 3.2.2 on Windows with Sn0wbreeze 2.1