The PwnageTool for Mac OS X have been released now and you could use to jailbreak your iPhone 3G on iOS 4.1 while preserving the baseband so that you could unlock iPhone 3G 4.1 iOS. The old version of Ultrasn0w, that is version 1.1-1 could be used to unlock iPhone 3G 4.1 iOS. Here are the steps to do it. NOTE : You could now use the guide given here instead of this. How to Unlock iPhone 3G iOS...

Geohot has released the waited Limera1n jailbreak tool for Windows and is available to download. You would have to wait for the Mac OS X version of Limera1n which will made later available to download. Now you could download Limerain for Windows to jailbreak all devices on iOS 4.1 and iPad on iOS 3.2.2. limera1n, 6 months in the making iPhone 3GS, iPod Touch 3G, iPad, iPhone 4, iPod Touch...

GreenPois0n Jailbreak For iOS 4.1 Tutorial[Shatter Exploit] GreenPoison is a low level iBoot Jailbreak based on Shatter exploit. Unlike other jailbreak software, GreenPoison cannot be patched by iOS updates released by Apple until they manufacture the hardware to fix it. It is because the hack is done on the hardware level which cannot be fixed by a software updation. Please note: GreenPoison will...