Hi Guys, After sorting a couple of boxes with the Buck supply mod and valuble help from Johnny B and Fingers, I have obtained another faulty Duo. This one is stuck on starting, but when try to load firmware, according to display it sees the USB drive but does nothing else. Not sure of the history, when I try to put a bootloader on also nothing happens. I am thinking should I try loading new firmwaref from RS232? But haven't got the utilty program. Hope you Guys can give me some pointers? Thank you. Regards, Jules.