dfu-util is a program that implements the host (PC) side of the USB DFU 
(Universal Serial Bus Device Firmware Upgrade) protocol.

In the OpenMoko project (for example), this program is used to communicate 
with the specially enhanced u-boot boot loader, which implements the DFU 
device side.

Author:	Bruce Cran <bruce@cran.org.uk>
WWW:   http://wiki.openmoko.org/wiki/Dfu-util