# Electron using 3rd party SIM blinking green **URL:** \ **Category:** Troubleshooting\ **Created:** [November 5, 2016, 8:17pm UTC](https://community.particle.io/t/electron-using-3rd-party-sim-blinking-green/27052 "2016-11-05T20:17:46Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Anton](https://avatars.discourse-cdn.com/v4/letter/a/d9b06d/32.png) [@Anton](https://community.particle.io/u/Anton)\ **Post date:** [November 5, 2016, 7:42pm UTC](https://community.particle.io/t/electron-using-3rd-party-sim-blinking-green/27052/1 "2016-11-05T19:42:54Z")
One of my Electrons was working fine with 3rd party SIM and few days ago started blinking green … I’ve tried everything - updating code with STARTUP(cellular\_credentials\_set(“[internet.tele2.ru](http://internet.tele2.ru)”, “”, “”, NULL)); string… flashing again … adding setcreds etc… no reaction - still blinking green… assume something wrong with Electron itself … any way out ?? maybe Hard reset of Electron ?? but how to hard reset it ?? ---
**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:** [November 5, 2016, 7:46pm UTC](https://community.particle.io/t/electron-using-3rd-party-sim-blinking-green/27052/2 "2016-11-05T19:46:41Z")
The usual way to get close to factory default woub go via DFU Mode ```nohighlight particle update particle flash --usb tinker # or for third party sim, upload the binary you got via setup.particle.io particle flash --usb ``` ---
**Author:** ![Anton](https://avatars.discourse-cdn.com/v4/letter/a/d9b06d/32.png) [@Anton](https://community.particle.io/u/Anton)\ **Post date:** [November 5, 2016, 8:01pm UTC](https://community.particle.io/t/electron-using-3rd-party-sim-blinking-green/27052/3 "2016-11-05T20:01:07Z")
thanks for helping out… when I turn Electron to DFU mode Windors device manager asks for Proton DFU mode drivers - existing set of drivers doesnt fit ((( what should i feed there ? ---
**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:** [November 5, 2016, 8:13pm UTC](https://community.particle.io/t/electron-using-3rd-party-sim-blinking-green/27052/4 "2016-11-05T20:13:42Z")
You need to install the DFU drivers via zadig [http://zadig.akeo.ie/](http://zadig.akeo.ie/) Here is a tutorial > [@Tutorial: Installing DFU-Driver on Windows \[24 Feb 2015\]](https://community.particle.io/t/tutorial-installing-dfu-driver-on-windows-24-feb-2015/3518): > > So it seems like some spark owners want to go slightly advanced but instructions for installing the DFU-driver is a little vague. How to put your core in DFU-mode Press on BOTH buttons Release only the Reset button Release the Mode button once the core start blinking yellow This will be the dfu-mode smilePre-check! If you have somehow done this process previously but is unable to use dfu-util successfully, you will need to uninstall the DFU-driver 1st Put your core in DFU-mode Ope… ---
**Author:** ![Anton](https://avatars.discourse-cdn.com/v4/letter/a/d9b06d/32.png) [@Anton](https://community.particle.io/u/Anton)\ **Post date:** [November 5, 2016, 9:55pm UTC](https://community.particle.io/t/electron-using-3rd-party-sim-blinking-green/27052/5 "2016-11-05T21:55:33Z")
@ScruffR thanks a lot for guiding in this hard situation finally did all you’ve said C:\_particcle\tele2\>particle flash --usb firmware.bin running dfu-util -l Found DFU device 2b04:d00a checking file firmware.bin spawning dfu-util -d 2b04:d00a -a 0 -i 0 -s 0x08080000:leave -D firmware.b 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](mailto:dfu-util@lists.gnumonks.org) Opening DFU capable USB device… ID 2b04:d00a 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 = 0x08080000, size = 5948 Download [=========================] 100% 0 bytes Download done. File downloaded successfully Invalid DFU suffix signature A valid DFU suffix will be required in a future dfu-util release!!! ## Flash success! at the end is says “Invalid DFU suffix signature” but Flash is success! - but still bninking 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:** [November 6, 2016, 6:40am UTC](https://community.particle.io/t/electron-using-3rd-party-sim-blinking-green/27052/6 "2016-11-06T06:40:02Z")
That suffix message is no issue - that’s normal. Is the antenna attached properly? Have you got the LiPo connected and fully charged? What version CLI have you got? Did you do ```cpp particle update ```