One more addendum - just the clm_blob alone from https://github.com/RPi-Distro/firmware-nonfree/commit/dc406650e840705957f8403efeacf71d2d7543b3, not even the sdio.bin with it, on top of the stock bullseye firmware-brcm80211, works for me.
- Rich On Sun, Nov 21, 2021 at 1:16 PM Rich <rincebr...@gmail.com> wrote: > > I appear to have just been burned by this setting up my new Pi 4B 4GB. > > I likewise found that stealing just cyfmac43455-sdio.clm_blob (which > brcmfmac43455-sdio.clm_blob is a symlink to on my system) from > 20210315-3+rpt3 and reloading the driver made everything happy and > functional... > > - Rich
