I did get it to work.
The chip is 328p.
I connected 22uF between megas 2560 and gnd.
This is the command:
sudo avrdude -c avrisp -p atmega328p -P /dev/ttyACM0 -U flash:w:/tmp/build8745867845927178213.tmp/Blink.cpp.hex -b 19200 -v -v -v -v
The blink was created from standard example blink -> verify and using verbose option in Preferences located.
