MacBook Pro 15" Late 2013 i7 2.3GHz dual graphics A1398

Hello, my Macbook seemed to have lost it's serial number and doing a pram and smc reset does nothing to help. I have ordered a spi adapter to reprogram the laptops serial number. But there is one issue that I am having the number on the logic board is "820-3547-A" and the emc number on the bottom casing is "EMC 2745" so I'm not sure what bin to use to repair the efi/bios chip

820-3547-A is the IO board, not the motherboard.
Here is a table to translate the numbers around:
www.cmizapper.com/board/mbpr/index.html

Wow, thank you very much.