The board has an I/O pin broken out label DTR.. for use with flashing?
which is connected to a cap/resistor/reset pin on Atmega..
and
sorry for confusion.. quite new,, and not sure how to explain it best I guess.
(when i use this same DIY cable with only GND, 5v+, RX, TX).. for breadboard/standalone Arduino for DIP.. it works fine... this is my first time with a custom board like this.)
I can 'tap' the RESET wire directly on the board.. (which gives me the blinking red light like its resetting)..
I have not tried to flash through my Arduino Due 2009! thanks for suggestion another approach to try..
I'll try it in 30 minutes closer to lunch 