iBooter: Interactive iPhone Diagnostics

iPhone hacker Niacin has just released iBooter, his new iPhone diagnostics tool. It serves as an interactive console for iBoot, the Apple bootloader, runs on Mac/Windows/Linux independently of iTunes. Using iBooter, you can do fun things like set environmental variables, write a custom image to the display (ie. change the image that shows up when you dock the iPhone), run USB commands, and diagnose booting errors.

iPhuc has offered similar functionality, but was dependent on iTunes and was only capable of sending commands to iBoot. With iBooter, you can both send commands and receive replies, allowing you to diagnose errors and the like.