I am using IDE 1.6.9....... And after updating Arduino AVR Boards to v. 1.6.12, I can no longer uplload to board.
Going back to v. 1.6.11 and it works again.Tried this on Arduino Mega2560 and Nano. Same result.Any idea?
i have just bought Arduino products from this site www.w11stop.com/ard-uino in pakistan.