his is a guide on how to jailbreak the iPhone 3GS with 3.0 firmware using redsn0w 0.8 for Windows. The process is identical to all the other previous redsn0w guides. This will just jailbreak your iPhone. It will not unlock it. To unlock the iPhone 3GS use ultrasn0w (guide here
). This guide is for 3.0 only. NOT 3.1.
Your iPhone 3GS should already