Sory to hear about your issues with the board!
-with the serial cable plugged in and terminal set up, press the reset button (the u-boot boot is VERY fast and short)
-can you provide the name/model of the serial cable you are using
-note that we cannot guarantee (was not characterized) what will happen to the board if you incorrectly connect the TX/RX of the serial port
Can you send an rma request to
support@adapteva.com. This doesn't sound very encouraging.
Andreas