# Photon: dfu-util on Ubuntu fails to flash **URL:** \ **Category:** Troubleshooting\ **Created:** [March 10, 2016, 7:46pm UTC](https://community.particle.io/t/photon-dfu-util-on-ubuntu-fails-to-flash/20958 "2016-03-10T19:46:09Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![gustavotemple](https://avatars.discourse-cdn.com/v4/letter/g/eb8c5e/32.png) [@gustavotemple](https://community.particle.io/u/gustavotemple)\ **Post date:** [March 10, 2016, 7:46pm UTC](https://community.particle.io/t/photon-dfu-util-on-ubuntu-fails-to-flash/20958/1 "2016-03-10T19:46:09Z")
Hi there, I have setted my Photon to DFU mode: [https://docs.particle.io/guide/getting-started/modes/photon](https://docs.particle.io/guide/getting-started/modes/photon) And I am trying to flash this blink example (session _Compile Locally, Flash Locally - Over USB_): [https://learn.sparkfun.com/tutorials/photon-development-guide/all](https://learn.sparkfun.com/tutorials/photon-development-guide/all) But my Photon always got back to blinking blue. Any help/suggestions? My versions are: $ uname -a Linux 3.16.0-62-generic #83~14.04.1-Ubuntu SMP Fri Feb 26 22:52:39 UTC 2016 x86\_64 x86\_64 x86\_64 GNU/Linux $ particle help Welcome to the Particle Command line utility! Version 1.11.0 $ dfu-util -V dfu-util 0.9 ---
**Author:** ![gustavotemple](https://avatars.discourse-cdn.com/v4/letter/g/eb8c5e/32.png) [@gustavotemple](https://community.particle.io/u/gustavotemple)\ **Post date:** [March 10, 2016, 7:53pm UTC](https://community.particle.io/t/photon-dfu-util-on-ubuntu-fails-to-flash/20958/2 "2016-03-10T19:53:02Z")
$ dfu-util -v -v -d 2b04:d006 -a 0 -i 0 -s 0x080A0000:leave -D blink.bin 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/](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!!! Opening DFU capable USB device… ID 2b04:d006 Run-time device DFU version 011a Claiming USB DFU Interface… Setting Alternate Setting #0 … Determining device status: state = dfuIDLE, status = 0 dfuIDLE, continuing DFU mode device DFU version 011a Device returned transfer size 4096 DfuSe interface name: "Internal Flash " Memory segment at 0x08000000 3 x 16384 = 49152 ® Memory segment at 0x0800c000 1 x 16384 = 16384 (rew) Memory segment at 0x08010000 1 x 65536 = 65536 (rew) Memory segment at 0x08020000 7 x 131072 = 917504 (rew) Downloading to address = 0x080a0000, size = 2936 Download [] 0% 0 bytesErasing page size 131072 at address 0x080a0000, page starting at 0x080a0000 Poll timeout 50 ms Poll timeout 0 ms Download from image offset 00000000 to memory 080a0000-080a0b77, size 2936 Poll timeout 50 ms Poll timeout 0 ms File downloaded successfully Poll timeout 50 ms Poll timeout 0 ms dfu-util: Error during download get\_status ---
**Author:** ![gustavotemple](https://avatars.discourse-cdn.com/v4/letter/g/eb8c5e/32.png) [@gustavotemple](https://community.particle.io/u/gustavotemple)\ **Post date:** [March 10, 2016, 7:53pm UTC](https://community.particle.io/t/photon-dfu-util-on-ubuntu-fails-to-flash/20958/3 "2016-03-10T19:53:36Z")
$ particle flash --usb blink.bin running dfu-util -l Found DFU device 2b04:d006 checking file blink.bin spawning dfu-util -d 2b04:d006 -a 0 -i 0 -s 0x080A0000:leave -D blink.bin 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/](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!!! Opening DFU capable USB device… ID 2b04:d006 Run-time device DFU version 011a Claiming USB DFU Interface… Setting Alternate Setting #0 … Determining device status: state = dfuIDLE, status = 0 dfuIDLE, continuing DFU mode device DFU version 011a Device returned transfer size 4096 DfuSe interface name: "Internal Flash " Downloading to address = 0x080a0000, size = 2936 Download [=========================] 100% 2936 bytes Download done. File downloaded successfully dfu-util: Error during download get\_status Error writing firmware…dfu-util: Invalid DFU suffix signature dfu-util: A valid DFU suffix will be required in a future dfu-util release!!! dfu-util: Error during download get\_status ---
**Author:** ![bko](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/bko/32/20704_2.png) [@bko](https://community.particle.io/u/bko)\ **Post date:** [March 10, 2016, 7:56pm UTC](https://community.particle.io/t/photon-dfu-util-on-ubuntu-fails-to-flash/20958/4 "2016-03-10T19:56:21Z")
> [@gustavotemple](#): > > Downloading to address = 0x080a0000, size = 2936Download [=========================] 100% 2936 bytesDownload done. The above means that it worked. You can safely ignore the `dfu-util: Error during download get_status` error as that is not a real error. If your device is still blinking dark blue, then it does not have WiFi credentials yet. ---
**Author:** ![gustavotemple](https://avatars.discourse-cdn.com/v4/letter/g/eb8c5e/32.png) [@gustavotemple](https://community.particle.io/u/gustavotemple)\ **Post date:** [March 10, 2016, 8:30pm UTC](https://community.particle.io/t/photon-dfu-util-on-ubuntu-fails-to-flash/20958/5 "2016-03-10T20:30:45Z")
@bko, Yes, I have tryed this too, but my Photon got back to blinking magenta (Safe Mode) and the led D7 did not blink. ---
**Author:** ![bko](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/bko/32/20704_2.png) [@bko](https://community.particle.io/u/bko)\ **Post date:** [March 10, 2016, 9:23pm UTC](https://community.particle.io/t/photon-dfu-util-on-ubuntu-fails-to-flash/20958/6 "2016-03-10T21:23:52Z")
How did you run `make`? Did you include the platform option so it knows to build for a Photon? If not, that would give you the kind of thing you are seeing. Try this with your device in dfu mode: `make PLATFORM=photon APP=blink program-dfu` ---
**Author:** ![gustavotemple](https://avatars.discourse-cdn.com/v4/letter/g/eb8c5e/32.png) [@gustavotemple](https://community.particle.io/u/gustavotemple)\ **Post date:** [March 10, 2016, 9:33pm UTC](https://community.particle.io/t/photon-dfu-util-on-ubuntu-fails-to-flash/20958/7 "2016-03-10T21:33:45Z")
@bko, Yes, as follow below: cd firmware/main make PLATFORM=photon clean all make PLATFORM=photon APP=blink And after that: 1. make PLATFORM=photon APP=blink program-dfu 2. particle flash --usb blink.bin 3. dfu-util -v -v -d 2b04:d006 -a 0 -i 0 -s 0x080A0000:leave -D blink.bin But the result is the same ---
**Author:** ![bko](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/bko/32/20704_2.png) [@bko](https://community.particle.io/u/bko)\ **Post date:** [March 10, 2016, 9:47pm UTC](https://community.particle.io/t/photon-dfu-util-on-ubuntu-fails-to-flash/20958/8 "2016-03-10T21:47:04Z")
> [@gustavotemple](#): > > make PLATFORM=photon APP=blink program-dfu This command, with the part in dfu mode, compiles the blink APP and downloads it over dfu, so all the other commands are not needed. ---
**Author:** ![gustavotemple](https://avatars.discourse-cdn.com/v4/letter/g/eb8c5e/32.png) [@gustavotemple](https://community.particle.io/u/gustavotemple)\ **Post date:** [March 14, 2016, 4:06pm UTC](https://community.particle.io/t/photon-dfu-util-on-ubuntu-fails-to-flash/20958/9 "2016-03-14T16:06:48Z")
@bko, I have tried with another device Photon that I have, it flash normally and worked fine the example “_blink_”, and does not returned any error like “_dfu-util: Error during download get\_status_”. Do you know the reason why that happened? ---
**Author:** ![bko](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/bko/32/20704_2.png) [@bko](https://community.particle.io/u/bko)\ **Post date:** [March 14, 2016, 5:42pm UTC](https://community.particle.io/t/photon-dfu-util-on-ubuntu-fails-to-flash/20958/10 "2016-03-14T17:42:00Z")
It might have more recent software that implements the get\_status command in DFU mode. That issue was closed last Sept. in this change: >