1 definition by Your Momma Isn't Big Boned

Top Definition
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: ...
by Your Momma Isn't Big Boned June 22, 2010

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