Yesterday, Apple released iOS 4.0.2 which thwarts any chances of jailbreaking via Safari. Just a day after the new update, Redsn0w has already jailbroken it! Before you get excited, this jailbreak is only for the iPhone 3G. That’s right, 3G version only so 3GS and iPhone 4 users will not be able to jailbreak yet.
This redsn0w’s jailbreak is a bit more complicated as it requires you to download some utilities and firmwares to be flashed onto your device. Head to redmond pie on instructions to download.