I have a question about how to connect the two boards:
I followed the instructions from this site:
http://www.instructables.com/id/How-To-Burn-a-Bootloader-to-Clone-Arduino-Nano-30/
it says to connect pin 1 of the ICSP to pin 12 of working board, and pin 4 of ICSP to pin 11 of working board.
In my case this leads to:
MISO ICSP of NanoB to MOSI of NanoA & MOSI ICSP to MISO of NanoA?
Is this correct? I think I have seen on Nick Gammon's site that the connection was MOSI to MOSI, MISO to MISO. Which is the correct one?