Did you have luck? I finally got around to do this, and I did not.
I left my Board setting at Nano, otherwise I followed your instructions. After plugging in the USB cable, the LED (on D13, which is used for SCK) flashes seven times; it appears I need to hit reset on the "bad" Nano and then do the "Burn Bootloader" option.
However, I get this error message:
Error while burning bootloader.
avrdude: stk500_program_enable(): protocol error, expect=0x14,
resp0x50
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override this check.
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51
I'm wondering if I need to flip MISO/MOSI. I wouldn't think so. I tried that, and get this error (much quicker than the above error, I will add):
avrdude: stk500_getsync(): not in sync: resp=0x15
So no go on that.
When I plug in the USB cable, both boards will flash the LED (that is on D13, and is being used on SCK) seven times. Not sure what that means. The power LED on the "bad" Nano does light. I tried both of my "bad" Nano's with the same results. I double checked my wiring, and so far not seeing a mistake.
I have my "good" Nano plugged into a protoboard, and I have wires from D10, D11, D12, D13, +5V and GND (as supplied by the Nano, no external supply used) going to the 6 pin ICSP connector on the "bad" Nano.
Thanks for the help.