The iPhone dev team has just released PwnageTool 4.1 for Mac OS X. Through a combination of the recently released geohot limera1n exploit , @comex’s recently released pf kernel exploit, and the dev teams original pwnage2 exploit, PwnageTool 4.1 works untethered on these devices at firmware 4.1: AppleTV 2G iPad (firmware 3.2.2) iPod touch 4G iPod touch 3G iPhone4 iPhone 3GS iPhone 3G PwnageTool allows you to restore to a custom IPSW file.  For instance, you can restore to a pre-jailbroken firmware while simultaneously maintaining your current baseband (and thus your ultrasn0w carrier unlock).  You can also add whatever packages you want in the “Expert” mode of PwnageTool, if you wish to pre-install Cydia packages.   iPhone 3G users get the additional benefit of selecting their own boot and recovery logos, and features like multitasking and battery charge percentage. PwnageTool’s main advantage to ramdisk-based methods (limera1n, greenpois0n, redsn0w) is for unlockers — those that need to keep their current baseband and preserve their ultrasn0w unlock.  But in this new age of both bootrom- and userland-based exploits, it’s an excellent platform for continuing the jailbreak through all future firmwares.  More on this later!  In the meantime, please enjoy this free software and please provide any usage feedback in our comment section below

» Read more: Dev Teams PwnageTool 4.1 Jailbreak for Mac OS X released!