Got an RPi 3B for Christmas and found time to try and set it up finally. Apparently it comes with a WiFi chip but I've been having lots of trouble setting it up. When I do ifconfig -a I only see lo eth0, and there's no wlan0 interface. I tried to modprobe brcmfmac brcmutil cfg80211 but to no avail, and dmesg doesn't return anything helpful :/ Also I tried using ethernet to update the system (hoping there would be firmware updates) and it connected/updated fine, but that didn't do anything to solve the wifi problem. Any suggestions? I'm fairly comfortable with Linux/Arch but this just perplexes me. I think it has something to do with the kernel modules but I'm not totally sure. Everywhere I've looked on the Internet so far has lead to a dead end or hasn't worked :(
Any help would be appreciated!