user21519: I recently bought an arduino yun. When trying to connect to the router following the procedure in https://www.arduino.cc/en/Guide/ArduinoYun#toc14. After the Configure & Restart, the Arduino network shut down after a few moments but it wasn´t linked to my router.
After reading a bit about it in the internet, i upgraded it following https://www.arduino.cc/en/Tutorial/YunSysupgrade. As i found that the firmware version 1.5.3 was from 2014 https://github.com/arduino/openwrt-yun/blob/master/ChangeLog, and as Reflashing the OpenWrt-Yun image on the Yún would void warranty, i proceeded by http://nootrix.com/software/upgrade-arduino-yun-openwrt/. Everything occured as detailled there.
However now, when i turn on the yún, none network appear and the WLAN LED doesn't blink.
Thanks

user16061: Find out if the Linux system is running. Maybe you mistyped your WiFi password.
Try the Following: 

connect via Ethernet check your router to see if the Yun request an IP via DHCP
If unsuccessful connect via USB and install this sketch to see if you get a command prompt maybe your network settings are messed up 

Still no success?

Press the WiFi reset button for at least 30 seconds to do a reset to
factory defaults.


21519: <p>I recently bought an arduino yun. When trying to connect to the router following the procedure in <a href="https://www.arduino.cc/en/Guide/ArduinoYun#toc14" rel="nofollow">https://www.arduino.cc/en/Guide/ArduinoYun#toc14</a>. After the Configure &amp; Restart, the Arduino network shut down after a few moments but it wasn´t linked to my router.</p>

<p>After reading a bit about it in the internet, i upgraded it following <a href="https://www.arduino.cc/en/Tutorial/YunSysupgrade" rel="nofollow">https://www.arduino.cc/en/Tutorial/YunSysupgrade</a>. As i found that the firmware version 1.5.3 was from 2014 <a href="https://github.com/arduino/openwrt-yun/blob/master/ChangeLog" rel="nofollow">https://github.com/arduino/openwrt-yun/blob/master/ChangeLog</a>, and as Reflashing the OpenWrt-Yun image on the Yún would void warranty, i proceeded by <a href="http://nootrix.com/software/upgrade-arduino-yun-openwrt/" rel="nofollow">http://nootrix.com/software/upgrade-arduino-yun-openwrt/</a>. Everything occured as detailled there.</p>

<p>However now, when i turn on the yún, none network appear and the WLAN LED doesn't blink.</p>

<p>Thanks</p>
 16061: <p>Find out if the Linux system is running. Maybe you mistyped your WiFi password.
Try the Following: </p>

<ul>
<li>connect via Ethernet check your router to see if the Yun request an IP via DHCP</li>
<li>If unsuccessful connect via USB and install this <a href="https://www.arduino.cc/en/Tutorial/YunSerialTerminal" rel="nofollow">sketch</a> to see if you get a command prompt maybe your network settings are messed up </li>
</ul>

<p>Still no success?</p>

<ul>
<li>Press the WiFi reset button for at least 30 seconds to do a reset to
factory defaults.</li>
</ul>
