iPhone Dev Team has recently introduced Redsn0w an updated version 0.9.6b2, which is based on Geohot’s limera1n exploit and can jailbreak iOS 4.1 on iPhone 4, iPhone 3GS, iPhone 3G, iPad (on iOS 3.2.2) and iPod touch 4G / 3G / 2G (Non MC Model only).
The new version Redsn0w also offers custom boot land recovery logos for the older devices like iPhone 3GS (old bootrom), iPod touch 2G (Non MC), and iPhone 3G, along with, it also provides the ability to Windows users to restore their custom IPSW files that are cooked using PwnageTool for Mac.
Halloween treat: upcoming redsn0w offers pwned-DFU (limera1n) mode… Windows users can then restore to custom IPSW
(tonight’s Halloween redsn0w will also bring back custom bootlogos for iPhone3GS owners with older bootroms)
For latest redsn0w users: “Just enter pwned DFU mode” is mostly for Windows users. The “Just boot tethered” is for future
Well, to jailbreak your device running iOS 4.1 occurs the the same steps as before the previous version tool for windows and mac occurs. Follow the guidelines just from here (for Mac OS X) (for Windows) to jailbreak your devices.