# Can't get into Factory Reset and DFU mode **URL:** \ **Category:** Troubleshooting\ **Created:** [August 28, 2014, 4:53pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673 "2014-08-28T16:53:35Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![tkelestemur](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/tkelestemur/32/3019_2.png) [@tkelestemur](https://community.particle.io/u/tkelestemur)\ **Post date:** [August 28, 2014, 4:53pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/1 "2014-08-28T16:53:35Z")
Hello, I got 3 cores, 2 of them with u.Fl connector and 1 of them chip antenna. I have setup cores with u.Fl easliy and they worked without issues with my company’s router. But when I try to connect core with chip antenna I got an issure. After setting wi-fi credentials core can’t connect to wi-fi. It blinks green cyan green and so on never breathing cyan. I decided to make a factory reset or firmware upgrade. But I am unable to get into Factory Reset and DFU mode when I try to hold both button and release RESET button and then the green led started to blink instead of yellow led. I’ve searched forum but not found a similar issure. Do you have any suggestions ? ---
**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:** [August 28, 2014, 5:12pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/2 "2014-08-28T17:12:17Z")
Have you tried the documentation ;)? Seems that you have mixed up the buttons for the DFU. You need to hold the MODE button and release the RESET button. All that can be found here: [http://docs.spark.io/connect/#appendix-dfu-mode-device-firmware-upgrade](http://docs.spark.io/connect/#appendix-dfu-mode-device-firmware-upgrade) Good luck! ---
**Author:** ![tkelestemur](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/tkelestemur/32/3019_2.png) [@tkelestemur](https://community.particle.io/u/tkelestemur)\ **Post date:** [August 28, 2014, 8:33pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/3 "2014-08-28T20:33:43Z")
I am sorry I have just written it wrong. I am doing the same thing mentioned in docs. I edit my first post. ---
**Author:** ![Hootie81](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/hootie81/32/2879_2.png) [@Hootie81](https://community.particle.io/u/Hootie81)\ **Post date:** [August 28, 2014, 8:46pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/4 "2014-08-28T20:46:31Z")
How long are you holding the mode button for after the green flashing? does it change to white after 10-15 seconds? Does the LED work “normally” normally? ie can you see the 3 individual colors? ---
**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:** [August 28, 2014, 8:48pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/5 "2014-08-28T20:48:26Z")
No problem, just making sure it wasn’t the wrong combination. Have you tried all of the steps described here? Personally I’ve noticed that some power supplies can be a problem, in which case they sometimes work, and sometimes they get and endless flashing green loop. Worthwhile trying a different power supply. A factory reset should (normally) always work. Let’s call in the reinforcement troops on this one: @kennethlimcp @Dave Installing the CLI, and the CC3000 patch afterwards may also be worthwhile. Even if it’s only for the CLI, which is really useful! Lets hear what the above-mentioned have to say in this regard. Either way, good luck! ---
**Author:** ![Dave](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/dave/32/181_2.png) [@Dave](https://community.particle.io/u/Dave)\ **Post date:** [August 28, 2014, 9:04pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/6 "2014-08-28T21:04:34Z")
Here’s a video of a factory reset, DFU mode is just a matter of releasing the mode button a little earlier: Thanks, David ---
**Author:** ![tkelestemur](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/tkelestemur/32/3019_2.png) [@tkelestemur](https://community.particle.io/u/tkelestemur)\ **Post date:** [August 28, 2014, 9:07pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/7 "2014-08-28T21:07:44Z")
@Hootie81 I am holding enough I think after a while led is starting to blink green while I holding. Yes I am able to so blue when core is in Listening Mode. And green cyan when core trys to connect to wi-fi. @Moors7 Yes I followed every steps but I can’t accomplish them without getting into DFU or Factory Reset mode. I uploaded a video that I am trying to get into DFU mode. After I release RESET button the green led starts to blink and then cyan loop start over as you can see in the video. [Video link](https://www.dropbox.com/s/4eex8v9964prqtz/2014-08-28%2020.53.10.mp4?dl=0) @Dave I tried it also but it’s not working neither. ---
**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:** [August 28, 2014, 9:17pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/8 "2014-08-28T21:17:24Z")
Have you tried a different power supply as well, that has often been a problem for me? A computer USB should normally suffice. And make sure you’re keeping contact with the MODE button. They’re rather tiny, so I’ve slipped off of them quite some times. All rather strange… ---
**Author:** ![tkelestemur](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/tkelestemur/32/3019_2.png) [@tkelestemur](https://community.particle.io/u/tkelestemur)\ **Post date:** [August 28, 2014, 9:21pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/9 "2014-08-28T21:21:52Z")
I didn’t try with another power supply but as I write in the first post I managed to connect my other Spark Core that has u.Fl connector with the same USB hub of my computer. So I don’t think power supply is the problem. ---
**Author:** ![Hootie81](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/hootie81/32/2879_2.png) [@Hootie81](https://community.particle.io/u/Hootie81)\ **Post date:** [August 28, 2014, 9:38pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/10 "2014-08-28T21:38:23Z")
what happens if you hit just the reset by itself? is it the same? maybe the mode button doesn’t work? ---
**Author:** ![tkelestemur](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/tkelestemur/32/3019_2.png) [@tkelestemur](https://community.particle.io/u/tkelestemur)\ **Post date:** [August 28, 2014, 9:49pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/11 "2014-08-28T21:49:15Z")
It is same. Mode button works well because when I want to delete wi-fi credentials I hold MODE button 10 seconds and it goes to Listening Mode. ---
**Author:** ![adomenech](https://avatars.discourse-cdn.com/v4/letter/a/f1d935/32.png) [@adomenech](https://community.particle.io/u/adomenech)\ **Post date:** [February 27, 2015, 4:11pm UTC](https://community.particle.io/t/cant-get-into-factory-reset-and-dfu-mode/6673/12 "2015-02-27T16:11:23Z")
Exactly the same symptoms here!! Also with chip antenna and can not get into DFU mode And solved througth cli setup