Dev Team members PlanetBeing, MuscleNerd, and Pytey were speaking last week at the 25c3 conference in Germany to present how they hacked the iPhone. It’s a very “geeky” video but it’s worth your time if that’s your cup of tea.
Some interesting facts is that at least 180 people with Apple corporate IPs update their phones using the Dev Team’s software on a regular basis. No doubt these guys at Apple are working on countering the jailbreak and unlock tools.