I will receive my Pi 4 soon, so I started breaking down image generation scripts as I like to make image myself (as I install system on computer same way, by hand).
As I want to copy just specific firmware for wireless chip without installing whole firmware-brcm80211 package from non-free part, I need to know exact exact model.
Alternatively, kernel logs should show which firmware is loaded using something like:
sudo journalctl -b | grep brcmfmac
Sorry for my english, as I don't know it so well, so some phrases may look strange.