The L13 and the RX LED are always ON. No upload is possible.
I think the bootloder is bad.
I try to programm the bootloader with arduino IDE 1.60:
avrdude: Yikes! Invalid device signature.
Double check connections and try again, or use -F to override
this check.
Fehler beim Brennen des Bootloaders.
And i try this Project:
but it dosn't support the YUN
What can i do to fix it?