Hi to everyone,
I buy Arduino Yun from arduino.org and I used the IDE 1.7. For a while everything works well but some days ago my Arduino stop to work and I don't understand why.

These are my symptoms:

- USB LED always ON;
- No Wifi;
- No Ethernet;
- Can't access to Linux part with ssh;
- Reset buttons not works;
- I follow this guide but nothing happened: http://www.arduino.org/learning/tutorials/advanced-guides/rescue-guide-for-microcontroller-atmega-32u4

I stopped a project because of that and I don't know how to restore my Arduino and what is the problem.

I use MAC OSX Yosemite and the IDE Arduino 1.7.

Please, help me.

Thanks in advance.