# Photon not recognized by PC **URL:** \ **Category:** Troubleshooting\ **Created:** [January 6, 2016, 4:18pm UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841 "2016-01-06T16:18:04Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![namazian](https://avatars.discourse-cdn.com/v4/letter/n/7cd45c/32.png) [@namazian](https://community.particle.io/u/namazian)\ **Post date:** [January 6, 2016, 4:18pm UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/1 "2016-01-06T16:18:04Z")
Hello everybody I’ve bought new particle photon recently. for the first time I connected the board to PC and recognized correctly. but now, after installing node.js and other required software and drivers, as I connect it to PC, it couldn’t be recognized and only the led is blinking with green color. how could find the problem? thancks ---
**Author:** ![Moors7](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/moors7/32/588_2.png) [@Moors7](https://community.particle.io/u/Moors7)\ **Post date:** [January 7, 2016, 12:21am UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/2 "2016-01-07T00:21:58Z")
Could you place it in either Listening mode (blinking blue) or DFU mode (blinking yellow), since those two modes are the ones talking to the computer? ---
**Author:** ![namazian](https://avatars.discourse-cdn.com/v4/letter/n/7cd45c/32.png) [@namazian](https://community.particle.io/u/namazian)\ **Post date:** [January 7, 2016, 1:54am UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/3 "2016-01-07T01:54:20Z")
How could I do them? as I push the reset button for a second it does not go to listening mode ---
**Author:** ![ScruffR](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/scruffr/32/6952_2.png) [@ScruffR](https://community.particle.io/u/ScruffR)\ **Post date:** [January 7, 2016, 7:23am UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/4 "2016-01-07T07:23:32Z")
The docs would be the place to find such things Just type in the terms mentioned _Listening Mode_ or _DFU Mode_ and you’d find [https://docs.particle.io/guide/getting-started/modes/photon/#listening-mode](https://docs.particle.io/guide/getting-started/modes/photon/#listening-mode) and [https://docs.particle.io/guide/getting-started/modes/photon/#dfu-mode-device-firmware-upgrade-](https://docs.particle.io/guide/getting-started/modes/photon/#dfu-mode-device-firmware-upgrade-) ---
**Author:** ![namazian](https://avatars.discourse-cdn.com/v4/letter/n/7cd45c/32.png) [@namazian](https://community.particle.io/u/namazian)\ **Post date:** [January 7, 2016, 8:30pm UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/5 "2016-01-07T20:30:17Z")
ok, I could go to blink in yellow mode, but how could I flash it in this mode. How could I get my device id? ---
**Author:** ![ScruffR](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/scruffr/32/6952_2.png) [@ScruffR](https://community.particle.io/u/ScruffR)\ **Post date:** [January 7, 2016, 8:43pm UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/6 "2016-01-07T20:43:33Z")
Behind the second link I provide you'd find a follow on > [@](#): > > If you wish to program your Photon with a custom firmware via USB, you'll need to use this mode. This mode triggers the on-board bootloader that accepts firmware binary files via the dfu-utility. > Installation tutorial can be found _ **here** _. Those blue written texts are there to be investigated 😉 [https://docs.particle.io/guide/tools-and-features/cli/](https://docs.particle.io/guide/tools-and-features/cli/) and [https://docs.particle.io/reference/cli/](https://docs.particle.io/reference/cli/) ---
**Author:** ![namazian](https://avatars.discourse-cdn.com/v4/letter/n/7cd45c/32.png) [@namazian](https://community.particle.io/u/namazian)\ **Post date:** [January 8, 2016, 7:32am UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/7 "2016-01-08T07:32:10Z")
my photon is unable to go to listening mode, only yellow blinking mode in this mode to flash my photon I should have the device ID ---
**Author:** ![Moors7](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/moors7/32/588_2.png) [@Moors7](https://community.particle.io/u/Moors7)\ **Post date:** [January 8, 2016, 8:58am UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/8 "2016-01-08T08:58:44Z")
That mode allows flashing over usb, thus you need no device ID. If you’ve got the CLI installed, try `Particle update`. After that, try `Particle flash --usb tinker`. ---
**Author:** ![namazian](https://avatars.discourse-cdn.com/v4/letter/n/7cd45c/32.png) [@namazian](https://community.particle.io/u/namazian)\ **Post date:** [January 8, 2016, 2:43pm UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/9 "2016-01-08T14:43:23Z")
I did them but get this error Invalid dfuse address: 0x080A000: leave ---
**Author:** ![mdma](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/mdma/32/1924_2.png) [@mdma](https://community.particle.io/u/mdma)\ **Post date:** [January 8, 2016, 2:53pm UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/10 "2016-01-08T14:53:55Z")
check the version of dfu-util - should be at least 0.7 😄 ---
**Author:** ![ScruffR](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/scruffr/32/6952_2.png) [@ScruffR](https://community.particle.io/u/ScruffR)\ **Post date:** [January 8, 2016, 2:54pm UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/11 "2016-01-08T14:54:29Z")
I just recently saw a similar message of someone using dfu-util v0.5 - which version have you got? Darn - Mad (sorry) Mat was there first 😳 ---
**Author:** ![namazian](https://avatars.discourse-cdn.com/v4/letter/n/7cd45c/32.png) [@namazian](https://community.particle.io/u/namazian)\ **Post date:** [January 8, 2016, 3:07pm UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/12 "2016-01-08T15:07:27Z")
Dfu-util v1.0 ---
**Author:** ![Moors7](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/moors7/32/588_2.png) [@Moors7](https://community.particle.io/u/Moors7)\ **Post date:** [January 8, 2016, 3:28pm UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/13 "2016-01-08T15:28:43Z")
> [@namazian](#): > > Dfu-util v1.0 I doubt it. ![](https://us1.discourse-cdn.com/flex026/uploads/particle/original/2X/f/fd311b556f261543ec6ebc8cb24d5a055d908458.png) > **[dfu-util Homepage](https://dfu-util.sourceforge.net)** > > dfu-util Project Homepage ---
**Author:** ![namazian](https://avatars.discourse-cdn.com/v4/letter/n/7cd45c/32.png) [@namazian](https://community.particle.io/u/namazian)\ **Post date:** [January 8, 2016, 5:44pm UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/14 "2016-01-08T17:44:53Z")
ok, I installed dfu-util v 0.8 and run particle flash --usb tinker but I get this error ```auto Found DFU device 2b04:d006 checking file /usr/lib/node_modules/particle-cli/binaries/photon_tinker.bin spawning dfu-util -d 2b04:d006 -a 0 -i 0 -s 0x080A0000:leave -D /usr/lib/node_modules/particle-cli/binaries/photon_tinker.bin dfu-util 0.8 Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc. Copyright 2010-2014 Tormod Volden and Stefan Schmidt This program is Free Software and has ABSOLUTELY NO WARRANTY Please report bugs to dfu-util@lists.gnumonks.org dfu-util: Invalid DFU suffix signature dfu-util: A valid DFU suffix will be required in a future dfu-util release!!! Deducing device DFU version from functional descriptor length 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 = 3952 Download [=========================] 100% 3952 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 ``` at the end the led is blinking in green ---
**Author:** ![ScruffR](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/scruffr/32/6952_2.png) [@ScruffR](https://community.particle.io/u/ScruffR)\ **Post date:** [January 9, 2016, 6:09am UTC](https://community.particle.io/t/photon-not-recognized-by-pc/18841/15 "2016-01-09T06:09:03Z")
This final error should not bug you - it’s “normal” 😉 But since we are now able to DFU update, can you try ```nohighlight particle update particle flash --usb tinker ``` After that try wiping the WiFi credentials (while green blinking, hold SETUP for 10+ sec till rapid blue blinking) and reenter them (e.g. via `particle serial wifi`)