Okay I'm joining the club of unresponsive Mega 2560 R3 and the Ethernetshield R3
But I now have 2 sets that both won't respond after I uploaded a new sketch threw USB.
Now I can only monitor the serial info on the boards tx rx pins ( 1 and 0)
How on earth is this possible?
Are you having any luck with the new bootloader?
Thx
Herman