dfu-util 0.9

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2016 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

dfu-util: Invalid DFU suffix signature
dfu-util: A valid DFU suffix will be required in a future dfu-util release!!!
dfu-util: No DFU capable USB device available

Failed to flash to /dev/serial/by-id/usb-Klipper_Klipper_firmware_12345-if00: Error running dfu-util

If flashing Klipper to a Smoothieboard for the first time it may be
necessary to manually place the board into "bootloader mode" - press
and hold the "Play button" and then press and release the "Reset
button".

When a Smoothieboard is in bootloader mode it can be flashed with the
following command:
  make flash FLASH_DEVICE=1d50:6015

Alternatively, one can flash a Smoothieboard via SD card - copy the
"out/klipper.bin" file to a file named "firmware.bin" on an SD card
and then restart the Smoothieboard with that SD card.

src/lpc176x/Makefile:48: recipe for target 'flash' failed
make: *** [flash] Error 255