Definitions by Your Momma Isn't Big Boned

DFU 

Device Firmware Update, AKA Device Fucked Up. You may need to put your iPhone in DFU mode to downgrade your firmware.

Jay: DFU mode doesn't show the USB->iTunes icon, you fucking moron.
Silent Bob: ...

DFU by Your Momma Isn't Big Boned June 24, 2010