# phpman > man > dfu-tool(1)

[man(1)](https://www.chedong.com/phpMan.php/man/man/1/markdown)                                    dfu-tool man page                                   [man(1)](https://www.chedong.com/phpMan.php/man/man/1/markdown)



## NAME
       dfu-tool - write firmware to DFU devices

## SYNOPSIS
       dfu-tool [CMD]

## DESCRIPTION
       This manual page documents briefly the **dfu-tool** command.

       **dfu-tool** allows a user to write various kinds of firmware onto devices supporting the USB De‐
       vice Firmware Upgrade protocol.  This tool can be used to switch the device from  the  normal
       runtime  mode  to  `DFU  mode'  which allows the user to read and write firmware.  Either the
       whole device can be written in one operation, or individual `targets' can be  specified  with
       the alternative name or number.

       All synchronous actions can be safely cancelled and on failure will return errors with both a
       type and a full textual description.  libdfu supports DFU 1.0, DFU 1.1 and the ST DfuSe  ven‐
       dor  extension, and handles many device `quirks' necessary for the real-world implementations
       of DFU.

## OPTIONS
       The dfu-tool command takes various options depending on the action.  Run **dfu-tool** **--help**  for
       the full list.

## SEE ALSO
       [fwupdtool(1)](https://www.chedong.com/phpMan.php/man/fwupdtool/1/markdown), [fwupdmgr(1)](https://www.chedong.com/phpMan.php/man/fwupdmgr/1/markdown)

## BUGS
       No known bugs.

## AUTHOR
       Richard Hughes (<richard@hughsie.com>)



1.7.9                                       11 April 2021                                     [man(1)](https://www.chedong.com/phpMan.php/man/man/1/markdown)