I've accidentally connect the 167 over to the 3v3 power-rail while having the programming cables connected to AVR Dragon's ISP socket. I've switched back to the 5v but still getting "Unable to enter programming mode...". Have I burnt the SCL/MISO/MOSI pins?
However, the chip is still performing the blinking of the LED on PORTA0 as in my test code. Is there anyway to salvage this chip?