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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, we use this program to communicate with our specially enhanced U-Boot, which implements the DFU device side.

Using dfu-util and your smartphone, you can

  • transfer and flash partitions in internal NAND Flash.
  • transfer anything into RAM
    • this can be used for fast development cycles of low-level code such as kernels without flashing them
  • read out the current internal NAND partitions
    • this is an easy and efficient way of doing full backups of your phone


Source Code

Dfu-util is currently maintained at http://dfu-util.gnumonks.org/.

On Debian and Ubuntu, you'll need libusb-dev: sudo apt-get install libusb-dev autogen pkg-config autotools-dev autoconf automake

On Fedora you'll need libusb-devel and libusb-static: yum install libusb-devel libusb-static

On Gentoo you can: emerge -va openmoko-dfu-util

You can check out and build the latest version of dfu-util using the following git command:
git clone git://git.openezx.org/dfu-util.git
cd dfu-util

The resulting binary is dfu-util/src/dfu-util.


Binary packages will be made available as part of the regular Openmoko builds. Currently, there is a dfu-util for Linux/i386.

You need to make the downloaded file (dfu-util) executable with:

chmod +x dfu-util

you can then run it with


see below for full instructions.


dfu-util 0.0+r4880-1 is packaged for Debian >= lenny, so can be installed with: apt-get install dfu-util


dfu-util 0.0+r4067-3.1 is packaged for Ubuntu >= intrepid (8.10), so can be installed with: apt-get install dfu-util


dfu-util is packaged for Slackware (12.1), so can be installed with: pkgtool

A newer SlackBuild is also available on slackbuilds.org

Arch Linux

dfu-util is packaged for Arch Linux, so can be installed with makepkg


The links below install rpm packaged dfu-util in (open)SuSE :

1-Click Install for SLE 10

1-Click Install for SLE 11

1-Click Install for openSuSE 10.3

1-Click Install for openSuSE 11.0

1-Click Install for openSuSE 11.1

1-Click Install for openSuSE Factory


Centos 5


Fedora 9

Fedora 10


Mandriva 2008

Mandriva 2009




DFU-Util is in the main tree under the name openmoko-dfu-util.


Currently, there is a largely untested binary for Win32 (see Dfu-util-windows). Windows users can refer to No_Linux for a more tested approach.


Compiling dfu-util on Mac:


See Manuals/Dfu-util

See also

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