I think it's a difference between the firmwares that like the b43 driver uses, and the ones that the brcmfmac driver uses. I've got a laptop with a bcm4312, and

I think it's a difference between the firmwares that like the b43 driver uses, and the ones that the brcmfmac driver uses. I've got a laptop with a bcm4312, and it's got a very different-looking set of firmware files than the ones used in my Pi3.