Ubuntu 24.04, Broadcomm BCM4364 - Wifi option hidden in Preferences and unable to connect wirelessly at all

Support and Help
1

I have managed to successfully install Ubuntu twice, thanks to the very detailed guide

However…my new MacBook (as it was the laptop which had the most oomph for my money when I bought it) is not acknowledging that it has any Networking capability - I can only find it in Preferences when I manually search for it, and whenever I click off, it hides the Networking menu

[[SOLVED] How to install a driver for the Broadcom series of PCI wireless cards]
Running lspci -nn -d 14e4: gives me
Broadcom Corporation BCM4306 802.11bgn Wireless Network Adapter [14e4:4464] (rev 04)

I have tried the completely offline wireless-info script from Network Connection Troubleshooting , but even when I right-click the file on the desktop and select “Run as program”, I do not seem to get any response from Ubuntu, nor do I get any output file
Files → Preferences does not show me any tabs, nor can I see anything which is labelled behaviour

The only instance of “4464” when I check Search is Ask us anything about Ubuntu Kernels! - #156 by hwpplayer1

I am happy to provide more information, but I will need detailed steps
[Aside: I only know SQL. If I can contribute to the community, please point the way]

2

Any results from terminal for sudo dmesg | grep firm
I suspect it might be missing firmware, can you use USB tethering to a smartphone to get an internet connection?

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3

I can connect to the Internet once I tether by the smartphone; thank you!

sudo dmesg | grep firm gave me

[ 0.381467] Relocating firmware framebuffer to offset 0x0000000000600000[d] within [mem 0xb0000000-0xbfffffff flags 0x14220c]
[ 1.606700] systemd[1]: Mounting snap-firmware\x2dupdater-127.mount - Mount unit for firmware-updater, revision 127…
[ 1.607425] systemd[1]: Mounting snap-firmware\x2dupdater-147.mount - Mount unit for firmware-updater, revision 147…
[ 1.626095] systemd[1]: Mounted snap-firmware\x2dupdater-127.mount - Mount unit for firmware-updater, revision 127.
[ 1.626248] systemd[1]: Mounted snap-firmware\x2dupdater-147.mount - Mount unit for firmware-updater, revision 147.
[ 2.005111] brcmfmac 0000:05:00.0: Direct firmware load for brcm/brcmfmac4364b3-pcie.apple,bali-HRPN-u-7.7-X0.bin failed with error -2
[ 2.005444] brcmfmac 0000:05:00.0: Direct firmware load for brcm/brcmfmac4364b3-pcie.apple,bali-HRPN-u-7.7.bin failed with error -2
[ 2.005536] brcmfmac 0000:05:00.0: Direct firmware load for brcm/brcmfmac4364b3-pcie.apple,bali-HRPN-u.bin failed with error -2
[ 2.005552] brcmfmac 0000:05:00.0: Direct firmware load for brcm/brcmfmac4364b3-pcie.apple,bali-HRPN.bin failed with error -2
[ 2.005566] brcmfmac 0000:05:00.0: Direct firmware load for brcm/brcmfmac4364b3-pcie.apple,bali-X0.bin failed with error -2
[ 2.005693] brcmfmac 0000:05:00.0: Direct firmware load for brcm/brcmfmac4364b3-pcie.apple,bali.bin failed with error -2
[ 2.005707] brcmfmac 0000:05:00.0: Direct firmware load for brcm/brcmfmac4364b3-pcie.bin failed with error -2
[ 2.453405] Bluetooth: hci0: BCM: firmware Patch file not found, tried:
[ 5.488119] [drm] Found VCN firmware Version ENC: 1.21 DEC: 7 VEP: 0 Revision: 2
[ 5.488126] amdgpu 0000:03:00.0: amdgpu: Will use PSP to load VCN firmware

4

The only source I can find for that firmware is Release 14.0 · NoaHimesaka1873/apple-bcm-firmware · GitHub
You would need to download, extract the files and go to /usr/bin/firmware/brcm in the extracted folder and then copy the files to /usr/lib/firmware/brcm on the install then reboot

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5

That has worked perfectly, and I can now see WiFi networks. Thank you!

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