Broadcom Wifi on macOS Sequoia

A collection of instructions and links to make Broadcom Wifi work natively again under macOS Sonoma and Sequoia

Apple dropped Broadcom Wifi support since Sonoma, while Broadcom Wifi worked natively until Ventura. I tested this with a Fenvi T919 card on Sequoia 15.1. This guide should work with most Broadcom cards that worked natively under Ventura, but there may be exceptions.

This process involves disabling SIP and AMFI, so be warned: Modifying the system with OCLP Requires SIP, Apple Secure Boot and AMFI to be disabled so there are some compromises in terms of security.

Broadcom Wifi working on Sequoia 15.1

1. Get kexts

• Check https://github.com/dortania/OpenCore-Legacy-Patcher/tree/main/payloads/Kexts/Acidantheraand download the latest version of AMFIPass-v1.4.1-RELEASE.zip
• Check https://github.com/dortania/OpenCore-Legacy-Patcher/tree/main/payloads/Kexts/Wifi and download the latest version of IOSkywalkFamily-v1.2.0.zip and IO80211FamilyLegacy-v1.0.0.zip

Extract and add these Kexts to your EFI folder:

• AMFIPass.kext

• IOSkywalkFamily.kext

• IO80211FamilyLegacy.kext

2. Edit config.plist

Edit your config.plist so that it reflects these changes:

2.1 - Add the new kexts to your existing ones (Kernel - Add)

Added kexts

                <dict>
                    <key>Arch</key>
                    <string>Any</string>
                    <key>BundlePath</key>
                    <string>AMFIPass.kext</string>
                    <key>Comment</key>
                    <string>V1.4.1</string>
                    <key>Enabled</key>
                    <true/>
                    <key>ExecutablePath</key>
                    <string>Contents/MacOS/AMFIPass</string>
                    <key>MaxKernel</key>
                    <string></string>
                    <key>MinKernel</key>
                    <string></string>
                    <key>PlistPath</key>
                    <string>Contents/Info.plist</string>
                </dict>
                <dict>
                    <key>Arch</key>
                    <string>Any</string>
                    <key>BundlePath</key>
                    <string>IOSkywalkFamily.kext</string>
                    <key>Comment</key>
                    <string>V1.0</string>
                    <key>Enabled</key>
                    <true/>
                    <key>ExecutablePath</key>
                    <string>Contents/MacOS/IOSkywalkFamily</string>
                    <key>MaxKernel</key>
                    <string></string>
                    <key>MinKernel</key>
                    <string>23.0.0</string>
                    <key>PlistPath</key>
                    <string>Contents/Info.plist</string>
                </dict>
                <dict>
                    <key>Arch</key>
                    <string>Any</string>
                    <key>BundlePath</key>
                    <string>IO80211FamilyLegacy.kext</string>
                    <key>Comment</key>
                    <string>V1200.12.2b1</string>
                    <key>Enabled</key>
                    <true/>
                    <key>ExecutablePath</key>
                    <string>Contents/MacOS/IO80211FamilyLegacy</string>
                    <key>MaxKernel</key>
                    <string></string>
                    <key>MinKernel</key>
                    <string>23.0.0</string>
                    <key>PlistPath</key>
                    <string>Contents/Info.plist</string>
                </dict>
                <dict>
                    <key>Arch</key>
                    <string>Any</string>
                    <key>BundlePath</key>
                    <string>IO80211FamilyLegacy.kext/Contents/PlugIns/AirPortBrcmNIC.kext</string>
                    <key>Comment</key>
                    <string>V1400.1.1</string>
                    <key>Enabled</key>
                    <true/>
                    <key>ExecutablePath</key>
                    <string>Contents/MacOS/AirPortBrcmNIC</string>
                    <key>MaxKernel</key>
                    <string></string>
                    <key>MinKernel</key>
                    <string>23.0.0</string>
                    <key>PlistPath</key>
                    <string>Contents/Info.plist</string>
                </dict>

2.2 - Allow for IOSkywalk kext downgrade by excluding it (Kernel - Block)

IOSkywalk kext downgrade

                <dict>
                    <key>Arch</key>
                    <string>Any</string>
                    <key>Comment</key>
                    <string>Allow IOSkywalk Downgrade</string>
                    <key>Enabled</key>
                    <true/>
                    <key>Identifier</key>
                    <string>com.apple.iokit.IOSkywalkFamily</string>
                    <key>MaxKernel</key>
                    <string></string>
                    <key>MinKernel</key>
                    <string>23.0.0</string>
                    <key>Strategy</key>
                    <string>Exclude</string>
                </dict>

2.3 - Change SecureBootModel to Disabled (Entries - Security)

SecureBootModel Disabled

                <key>SecureBootModel</key>
                <string>Disabled</string>

2.4 - Set your SIP to be partially disabled (NVRAM - Add - 7C436110-AB2A-4BBB-A880-FE41995C9F82)

SIP Partially Disabled

                    <key>csr-active-config</key>
                    <data>AwgAAA==</data>

• csr-active-config is 03080000 in a plist editor

• Double check your config.plist

3. Reboot

• Reboot into OpenCore, press the Space key. Reset your NVRAM and continue booting.

• Download OCLP from here: https://github.com/dortania/OpenCore-Legacy-Patcher/releases
• Open OCLP and select Root Patching (needed after every update). It will ask you to reboot again after it finishes patching.

4. Activate AppleVTD

• This may be optional for some cards, but for my Broadcom BCM94360CD based Fenvi FV-T919 Wifi PCIe card, this step was required.

4.1 Patch DMAR

• You may need to enable VT-D in your BIOS already in order to be able to download the DMAR table

• Use the following guide: Patching DMAR Table: Manual or use SSDTTime

Patch DMAR table using SSDTTime

4.2 Edit config.plist

• ACPI --> Add

  • Make sure your new patched DMAR.aml file is in your EFI Partition's EFI/OC/ACPI folder and also added to your config.plist

                <dict>
                    <key>Comment</key>
                    <string></string>
                    <key>Enabled</key>
                    <true/>
                    <key>Path</key>
                    <string>DMAR.aml</string>
                </dict>

• Kernel --> Quirks

                <key>DisableIoMapper</key>
                <false/>
                <key>DisableIoMapperMapping</key>
                <true/>

• ACPI --> Delete

                <dict>
                    <key>All</key>
                    <true/>
                    <key>Comment</key>
                    <string>Drop DMAR table</string>
                    <key>Enabled</key>
                    <true/>
                    <key>OemTableId</key>
                    <data></data>
                    <key>TableLength</key>
                    <integer>0</integer>
                    <key>TableSignature</key>
                    <data>RE1BUg==</data>
                </dict>

• TableSignature is 444D4152 in a plist editor

4.3 In the BIOS set

• VT-d --> Enabled

4.4 Check AppleVTD

• Reboot

• Download and open IORegistry Explorer
• In IOReg search for AppleVTD

• If enabled, the AppleVTD property can be seen under the AppleACPIPlatformExpert node

AppleVTD under AppleACPIPlatformExpert

5. Check

• Reboot and check for native Wifi. If it's still not working, reset your NVRAM and check again.

• Test Wifi transmission speed using: Option Click -> Wifi menu bar icon -> check Tx Rate and run an internet speed test.

Notes

• Additional kexts may be needed for Bluetooth

  • Broadcom WiFi and Bluetooth

Credits

• 5T33Z0 detailed instructions for OCLP on Hackintosh, a Wifi on Sonoma page and a guide for Replacing the DMAR table by a modified one
• OCAuxiliaryTools: screenshots of the config which was edited using OCAuxiliaryTools
• OCLP team who made this possible, even though they don't officially support OCLP on Hackintosh
• billabongbruno with an older such guide on Github
• u/6e656f73 on r/hackintosh especially for the AppleVTD tip :-)

Comments and discussion can be found on r/hackintosh: Broadcom Wifi on macOS Sonoma and Sequoia (Fenvi T919 and others)