I've just gotten a new Arduino Nano; when powered, the pin 13 LED just blinks.
When attempting to upload to it on Windows XP, I get this message:
avrdude: stk500_getsync(): not in sync: resp=0x00 avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51
And when attempting to upload to it on OSX, I get this message:
avrdude: stk500_recv(): programmer is not responding avrdude: stk500_recv(): programmer is not responding
For neither one does the board appear to reset; the pin 13 LED just continues to blink at me. Manually resetting while attempting to upload appears to do little to no good, changing nothing- whenever I do manually reset, the LED blinks once, then continues, after a short pause, to blink continuously again. I've checked the port and the board type, and neither of them appears to be the problem, or at least changing them doesn't do any good.