Replacing a missing left AirPod with firmware 8

My cats knocked over my AirPods and the left one went to the great void. I’m struggling finding a replacement:

Model number A3047

serial number M*******5L

version 8A356

case 80.0.358

I was told I have Firmware 8. All I find is firmware 7. Any idea where to look or am I screwed lol. Thanks!

[Edited by Moderator]

Original Title: Missing Left AirPod