# Spark Core Blinking Blue

**URL:** <https://community.particle.io/t/spark-core-blinking-blue/11389>\
**Category:** Troubleshooting\
**Created:** [April 22, 2015, 1:37pm UTC](https://community.particle.io/t/spark-core-blinking-blue/11389 "2015-04-22T13:37:28Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ninad\_shah](https://avatars.discourse-cdn.com/v4/letter/n/57b2e6/32.png) [@ninad\_shah](https://community.particle.io/u/ninad_shah)\
**Post date:** [April 22, 2015, 1:37pm UTC](https://community.particle.io/t/spark-core-blinking-blue/11389/1 "2015-04-22T13:37:28Z")

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I have been trying to connect my Spark Core to my WiFi router but no success. I have factory reset the core, so LED started blinking Blue. WHen I tried to configure it using Android App, it couldn’t find core and core also kept blinking Blue. I also tried using USB but same issue.  
Can someone guide me, how to connect this core to Cloud?

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**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:** [April 22, 2015, 1:45pm UTC](https://community.particle.io/t/spark-core-blinking-blue/11389/2 "2015-04-22T13:45:19Z")

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Have you had a look here already?

[http://docs.spark.io/troubleshooting/](http://docs.spark.io/troubleshooting/)

Especially check if your router settings comply.

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**Author:** ![ninad\_shah](https://avatars.discourse-cdn.com/v4/letter/n/57b2e6/32.png) [@ninad\_shah](https://community.particle.io/u/ninad_shah)\
**Post date:** [April 23, 2015, 4:49am UTC](https://community.particle.io/t/spark-core-blinking-blue/11389/3 "2015-04-23T04:49:49Z")

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OK, I was able to now send WiFI credentials, but it doesn’t go furher bu blinks Green. Any clue?

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**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\
**Post date:** [April 23, 2015, 6:13am UTC](https://community.particle.io/t/spark-core-blinking-blue/11389/4 "2015-04-23T06:13:32Z")

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It is a new core that has never connected successfully to the ☁?