We’ve been working with Ed and team at FreeBSD on this, and have a document showing what works currently on Framework Laptops: https://github.com/FrameworkComputer/freebsd-on-framework
A user needs some other working network connection first. I used my Android phone's USB tethering — all that takes is a quick `dhclient ue0`. Then one can run `fwget` to get the firmware that will make the Wi-Fi work fully: https://man.freebsd.org/cgi/man.cgi?fwget%288%29
Source: very happy Framework 12 owner (currently dual-booting Windows 11 Enterprise and FreeBSD 15.0 + Wayland + KDE) :)