There is no ISP pinout, just the USB connection.
Our setup contains the board plugged in the USB port. We tried to flash the microcontroller over USB via the command-line tool DFU-programmer (via Terminal on Mac) with the LilypadUSB bootloader, but receive the following Error:
ERROR: Data exists outside of the valid target flash region. Hex file error, use debug for more info. commands.c:360: Error writing memory data.
Do I use the appropriate bootloader? Or is it even the right approach to get it work?
We get the same/similar error in Windows with ATMEL FLIP:
Adress is out of range.