The iPhone 3.0.1 update was recently released. If you want to jailbreak any iPhone running on  iPhone OS 3.0.1, you must use redsn0w 0.8. This post will show a step-by-step tutorial on how to jailbreak iPhone 3.0.1 with redsn0w. Note: redsn0w only recognizes iPhone 3.0 firmware (not 3.0.1 yet!), although you are running firmware 3.0.1 [...]