Wifi in Sequoia 15.0 beta: Patching for legacy Broadcom wireless cards

[Hervé]

It should come as no surprise that the same issue that initially affected legacy Broadcom cards in macOS Sonoma now applies to freshly released macOS Sequoia beta. The OCLP tool will need to be updated for Sequoia.

[Hervé]

The devs have done a good job again and latest nightly builds of OCLP 1.6.0 now provide the fix for Broadcom Wifi in Sequoia. It's basically the same fix as for macOS Sonoma described here.

https://github.com/dortania/OpenCore-Legacy-Patcher/actions

 

For Clover users, once you've run the patcher and applied the root patches (Modern Wireless Networking), make sure to reboot with:

• Latest AMFIPass kext or boot arg amfi_get_out_of_my_way=1
• BlockSkywalk kernel & kext patch enabled
• patched IO80211FamilyLegacy + IOSkywalkFamily kexts as available here (same as required since Sonoma 14.4)

 

Example with my Latitude E7270 fitted with an Apple BCM94360CS2 wireless card:

 

 

 

 

 

 

 

Caution though because the paint still is a bit wet and I've noticed this on a couple of occasions after wake, which required to reconnect manually via the Wifi PrefPane:

[Hervé]

Further to troubleshooting made with @robi62 here, cards that require device id injection and/or binary patching of the IO80211FamilyLegacy PlugIn AirPortBrcmNIC like BCM4352-based DW1560, a new version v2.1.9 of Acidanthera's AirportBrcmFixup is under development but not officially released yet. This new version is being updated for Sequoia. Pre-release versions are available here. Downloads are only available to people who log in with their GitHub account. Here's a copy of the latest version at time of writing: AirportBrcmFixup-2.1.9-RELEASE.zip

 

Just add the kext to your injected kexts folder and you'll be good to go with the above OCLP process. OpenCore users only need to select the AirPortBrcmNIC injector in their config file, AirPortBrcm4360 injector being irrelevant since Big Sur.