[size=150]Hi There I too have exactly the same problem, I tried the dfuse and benf routine, useless…I tried the 2 hex files, copies perfectly ok, everything ok went from hex to rdy whatever, checked on the computer on e:/ programs on there ok, disconnect usb lead and put it back, programs still there, turn it of and on again, blank white screen, looked on computer again drive empty, it wont keep the hex files/rdy files whatever you do, wonder if there is anyway to put the original program back on, at least that worked, if anyone ever finds out please let me know, before I throw it away, done everything I can think of, might want to watch u tube clips on the nano, plenty of them,best wishes…Fred Nr London,[/size]