Apple just released iOS 4.0.1 for iPhone 4, 3GS and 3G. The jailbreak for iOS 4.0.1 is right now only available for iPhone 3G that can be done using Redsn0w 0.9.5b5-3.

Before you go for the guide you must know:

- This jailbreak is for iPhone 3G only.

- I will not be responsible for any loss of your device while attempting this jailbreak, do it on your own risk