Is also the web interface not working ?
Can you try the web interface via a ethernet cable ?
If you try something and want to reset it, then disconnect everything to make it start fresh with power up.
You got information from the linux/OpenWRT with the YunSerialTerminal. Is that the YunSerialTerminal sketch running on the ATmega32U4 ? It shows that the linux is working.
There is something wrong in the file system. I don’t know if that is inside the linux module or with an external SD card. It could be a SD card that is not properly formatted.
There is an error at line 59 of you log file : MIPS: no machine found for id 'linino-yun', supported machines:.
But I don’t know if that causes the file system error at the end.
Web interface through the ethernet port is not working. I also used IP scanner and there is no IP address associated to the yun.
The YunSerialTerminal shows that the Linux is working but unfortunately it is not responding to anything since the booting process is not going properly as I guess.
Nothing changed after removing the SD card.
Another sketch was uploaded and it sound the program freezes at the Bridge.begin()
If you did not change the configuration files of OpenWRT, and it suddenly stopped working, then try to return it. It is an offical Arduino Yun board ?
Perhaps someone else knows what can be done. You could click the "Report to moderator" link and ask the moderator if your topic can be moved to the Yun section of this forum : http://forum.arduino.cc/index.php?board=93.0