So I updated to the latest Rock app earlier today on my JB 3.1.2 3GS, and after rebooting it is just stuck at the boot logo. I've let it sit for 15+ minutes with no change. I've also tried putting it into DFU & Recovery mode, but it won't go. The screen goes black momentarily and then back to the boot logo. Itunes doesn't recognize that there is an iPhone even plugged in. I'm running the latest Itunes on a Snow Leopard Macbook if that helps at all. I'm desperate to get my phone back up and running asap, as I rely on being called to get jobs for work, so any help that can be offered is greatly appreciated.