Dfu-util - Device Firmware Upgrade Utilities Dfu-util is a host side implementation of the DFU 1.0 and DFU 1.1 [1] specification of the USB forum. DFU is intended to download and upload firmware to devices connected over USB. It ranges from small devices like micro-controller boards up to mobile phones and single-board computers. dfu-util is able to download firmware to devices as well as to upload firmware from them. dfu-util has been tested with Openmoko Neo1973 and Freerunner and many other devices. The official website is: http://dfu-util.sourceforge.net See the INSTALL file for build instructions. [1] DFU 1.1 specification: https://www.usb.org/sites/default/files/DFU_1.1.pdf