Firmware password - New logic board bought off eBay

Hi everyone,

As a quarantine project I decided to reinvigorate my old late 2010 11 inch Macbook Air.

2GB of ram isn't really good enough for today's tasks, so I found a new logic board on eBay and swapped them out.

However, I when I turn on the computer I am now greeted with the firmware padlock screen.

I have never knowingly activated a firmware lock, so I have a question for you.

Is the firmware lock tied to the new logic board? Or is it tied to the SSD?

If it is tied to the logic board then I will go back to the eBay seller. If it is tied to the SSD then maybe I did activate it at some point.

If the seller doesn't know then I'm hoping Apple might help. I have proof of purchase for all items so would be frustrating if I couldn't get past the lock.

Thanks.