reading chip identity with ISP programmer USBasp (http://www.fischl.de/usbasp/) for Arduino UNO:
/Applications/Arduino.app/Contents/Java/hardware/tools/avr/bin/avrdude -C /Applications/Arduino.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -p m328p -c usbasp
Have I bricked my Arduino Uno? Problems with uploading to board https://arduino.stackexchange.com/questions/13292/have-i-bricked-my-arduino-uno-problems-with-uploading-to-board