As promised in their yellowsnow demo, [pytey], [MuscleNerd], and [planetbeing] from the iphone-dev team presented ... a classic stack buffer overflow in DFU mode. DFU is Device Firmware Upgrade ...

An curved arrow pointing right. The blue glow of an iPhone's screen isn't good for our bodies at night – it suppresses the brain's release of melatonin, which throws off your body's sleep.