Broadcom FullMAC Wi-Fi support on macOS Sonoma, Sequoia and Tahoe without root patches

[kgp]

@eSaF, please see the update in my post above! 

[kgp]

14 minutes ago, eSaF said:

Thanks man, I managed to sort that part out.

I am now trying to sort out the wrong Country Code being displayed.

 

The Card was bought from AliExpress so goodness knows whether it is hard coded or not to NL.

I am toying with the idea of purchasing one for a UK iMac but loathed to spend anymore money considering my plan to purchase a Mac mini.

 

Nothing on your card is hardwired! Just use "bcmc-default-country-code"  - "GB" - "string" in the device properties !

It also perfectly works with DE on my system! Carefully revise my device properties displayed below.   

 

Edited October 26, 2025 by KGP-iMacPro

[jlrycm]

1 hour ago, eSaF said:

I don't know what it is but nothing I have tried worked.

  Hide contents

 

@eSaF have you tried resetting NVRAM after updating the device properties?

[Wagalms]

Ideally, if I may suggest, we would eliminate the dependency on PCI pastroughd, that is, AppleVTD, in the compilation of the AppleBCMWLANCompanion kext itself, replacing it with something that could be emulated in the driver, similar to Linux. This would be possible @Austere.J? (Credits: @Austere.J, Elisas64Fr, CaseySJ)

[kgp]

Proposed min/max kernel config.plist setting to run Apple's native DEXT Driver (LAN), BCMC (WIFI) and OCLP-Mod (AppleHDA) under Tahoe, and IntelLucy (or Lucy companions of @Mieze, LAN) and OCLP (WIFI) under Sequoia and Sonoma. This min/max kernel configuration is also valid for all other macOS versions. Also uncheck DisableIOMapper and DisableMapperMapping in the config.plist, i.e. AppleVTD enabled! I can confirm that the above approach works for both BCM943602CS and BCM943602CDP. No further need of Fenvis! 👍

 

 

 

Below, my actual EFI-Folder distribution: 

 

Edited October 30, 2025 by KGP-iMacPro

[BALDY_MAN]

I have just installed a BMC43602CDP CARD. and tried to get wifi working. but im just getting system crashing when I the to use modded EFI. File could someone be so kind and look at please

 

WIFI EFI TEST.zip

[kgp]

1 hour ago, BALDY_MAN said:

I have just installed a BMC43602CDP CARD. and tried to get wifi working. but im just getting system crashing when I the to use modded EFI. File could someone be so kind and look at please

 

WIFI EFI TEST.zip 10.12 MB · 1 download

 

I did not find anything suspicious in your EFI, that would prevent your system from boot. However, I would disable LucyRTL8125Ethernet.kext, as it might not work with AppleVTD enabled. If you disable LucyRTL8125Ethernet.kext, Apple's Dext driver will automatically take over with AppleVTD enabled. Though, there is something important for BCMC missing in your EFI-configuration: Uncheck DisableIOMapper to enable AppleVTD !!!!! Otherwise BCMC won't work at all! 

If you still want to use OLCP under Sequoia and Sonoma or add AppleHDA under Tahoe, have a look to my above EFI-Folder.

 

Cheers,

 

KGP      

Edited October 30, 2025 by KGP-iMacPro

[schrup21]

On 10/26/2025 at 9:53 PM, KGP-iMacPro said:

 

Nothing on your card is hardwired! Just use "bcmc-default-country-code"  - "GB" - "string" in the device properties !

 

As I already said, it is indeed possible, that the manufacturer (or someone else) sets e.g the CountryCode via OTP.

I own a DELL DW1830 which doesn't work with DE (WiFi extremely slow) with US everything is fine (#a also leads to US although DE is my region) - I'm talking about native Wifi in Ventura, not BCMC.

 

See: https://www.infineon.com/assets/row/public/documents/30/42/infineon-an214935-otp-programming-and-nvram-development-process-for-sdio-embedded-wlan-devices-applicationnotes-en.pdf?fileId=8ac78c8c7cdc391c017d0d2be759639d

 

 

The initial state of all OTP bits in an unprogrammed device is 0. Individual bits can be programmed to 1, but once

programmed, they can never be reprogrammed back to 0. The entire OTP array can be programmed in a single

write cycle using wl commands provided with the SDIO driver. Alternatively, multiple write cycles can be used to

selectively program specific fields, but only bits that are still in the 0 state can be programmed to the 1 state during

each programming cycle.

 

 

[schrup21]

@eSaF this could be related to VTD - if you disable BCMC Kext, is it the same? 

 

Maybe a patched DMAR.aml can improve the stability (removing all DMA reservations might not the best way though)

https://dortania.github.io/Getting-Started-With-ACPI/Universal/dmar.html

[kgp]

5 hours ago, eSaF said:

@KGP-iMacPro  Good day Bro, I have a small query hoping you can assist me with.

After employing your recommended BCMC settings in the BIOS and config.plist, I have now noticed the p/c from a Cold Boot will lock up on reaching the Desktop.

 

There is no movement of the mouse or keyboard entries I then have to resort to a hard reset with the power button.

On the second Boot up, the same thing will happen again, it is only on the third Boot that the machine is ok and performs normally.

 

This behaviour is a first for this machine which normally is rock solid in operation.

Have you noticed this kind of behaviour on your rig? I know this is early Beta stage so bugs of such will rear its head from time to time.

 

I have attached my config.plist for you to see if I have missed a vital entry or made an errant one.

I appreciate your time and advice. Thank you.

 

Cheers.

config.plist 57.74 kB · 1 download

 

@eSaF, just a few comments, Bro:

 

1.)  I don't understand  why you use in device properties "bcmc-default-country-code" -> "GB" -> "string" and "bcmc-enable-auto-country" -> "01000000" -> "data". I would use one or the other. It makes no sense to me to set "GB" and then "enable- auto-country". Besides, I am using device property "bcmc-srom-slide" -> "00000000" -> "data"

 

2.) LucyRTL8125Ethernet.kext is missing the max kernel flag 24.99.99. LucyRTL8125Ethernet.kext might not work under Tahoe with AppleVTD enabled. By this, you just might not have ethernet at all. With the max kernel flag 24.99.99, Apple's native Dext driver for ethernet should take over under Tahoe. 

 

3.) AMFIPass.kext is missing min kernel flag 23.0.0, in case you want to go below Sonoma one day.

 

Attached the modified config.plist.

 

 config.plist

   

When talking about freezes at the login screen, we are talking about BCMC and Tahoe, right? I had such behaviour only once within one entire month using now BCMC under Tahoe. However, BCMC produces a random kernel panic (KP) from time to time with my actual configuration during regular use on my system. If there is one KP, there might follow directly others. To stabilise the system again, I usually toggle WIFI "off" for a minute and then "on" again subsequently. No KPs with WIFI "off" anyway, thus also no need to disable the BCMC.kext entirely. 

 

In case of KP (freezes), you can upload the panic logs for @Austere.J, with the hope, that he will fix these freezes within some reasonable time.

 

To find the panic logs, go to "System Information" -> "logs" -> "Panic (system crashes) log" or see "/Library/Logs/DiagnosticReports/Kernel-2025-xx-xx-xxxxxx.panic".

 

With the actual configuration, you are using OCLP under Sequoia and Sonoma instead of BCMC anyway. Thus, there should not be any KPs or freezes under these macOS versions. 

 

Hope this helps somehow 👍 

 

Update: Just realised, that you use "csr-active-config" -> "67080000" -> "data". I use "03080000" in line with OCLP (WIFI) and OCLP-Mod (AppleHDA). For me "00000000" and "AMFIPass.kext" disabled, as proposed by @Austere.J, makes no sense to me, as one could not use OCLP (WIFI) under Sequoia and Sonoma or OCLP-Mod (AppleHDA) or MyKextInstaller (AppleHDA) under Tahoe. @Austere.J, should consider such setting for a stable BCMC release in the near future, as for me, at least Tahoe without onboard audio is simply a no go.  BTW.. I strongly discourage from patching DMAR! My DMAR has only one reserved memory region which is the XHCI controller, and though, I am facing from time to time KPs with BCMC under Tahoe! 

 

Update: Concerning IntelLucy.kext,  LucyRTL8125Ethernet.kext, etc... @Mieze confirmed problems of IntelLucy.kext with AppleVTD enabled under Tahoe. See:

 

It could well be, that other Lucy companions are affected by the same problem. In such case and if one wants to use BCMC despite being early beta, I recommend to take profit of Apple's DEXT Drivers for ethernet under Tahoe (AppleVTD enabled) in the meanwhile, until there is a solution provided by @Mieze in the near future. This can be simply done by adding the max kernel flag 24.99.99 at the IntelLucy.kext, LucyRTL8125Ethernet.kext, etc.. entries in your config.plist There are no issues of IntelLucy.kext, LucyRTL8125Ethernet.kext, etc. with AppleVTD enabled under Sequoia or Sonoma or any lower macOS version in use on your systems. IntelLucy.kext, LucyRTL8125Ethernet.kext, etc. also work with AppleVTD disabled (DisableIOMapper=True) under Tahoe, which however is at odd with BCMC, which requires AppleVTD enabled!  

Edited October 31, 2025 by KGP-iMacPro
Update

[BALDY_MAN]

19 hours ago, KGP-iMacPro said:

 

I did not find anything suspicious in your EFI, that would prevent your system from boot. However, I would disable LucyRTL8125Ethernet.kext, as it might not work with AppleVTD enabled. If you disable LucyRTL8125Ethernet.kext, Apple's Dext driver will automatically take over with AppleVTD enabled. Though, there is something important for BCMC missing in your EFI-configuration: Uncheck DisableIOMapper to enable AppleVTD !!!!! Otherwise BCMC won't work at all! 

If you still want to use OLCP under Sequoia and Sonoma or add AppleHDA under Tahoe, have a look to my above EFI-Folder.

 

Cheers,

 

KGP      

I have  tried a load of things cut down on  kext s  (DisableIOMapper=True. still shuts down and reboots

[kgp]

55 minutes ago, BALDY_MAN said:

I have  tried a load of things cut down on  kext s  (DisableIOMapper=True. still shuts down and reboots

What do you mean by "still shuts down and reboots"? Could you be a bit more explicit? Does your system successfully boot with this EFI with the BCMC kext disabled?

 

For BCMC, you have to uncheck DisableIOMapper anyway, i.e. DisableIOMapper=False! I also updated OC to 1.0.6 Dev and added max kernel flag 24.99.99 to LucyRTL8125Ethernet.kext to provide ethernet with AppleVTD enabled by means of the DEXT driver. 

 

 WIFI EFI TEST.zip

 

Edited October 31, 2025 by KGP-iMacPro

[deeveedee]

1 hour ago, KGP-iMacPro said:

I also updated OC to 1.0.6 Dev

 

Why?

[kgp]

5 minutes ago, deeveedee said:

 

Why?

 

Just to be sure that everything in Boot and OC is from the same OC source. As his files date back to 24 October, I chose the most actual OC Dev. There is no other why.. Could be also the official OC 1.0.5 release. I would not expect any difference.   

[deeveedee]

@KGP-iMacPro I only ask because OC 1.0.6 DEV has NO changes that are relevant to the problem that you're trying to fix (unless you need documentation changes).  Staying with an officially released version of OC is usually best when diagnosing / fixing a problem, unless the new OC DEV build has a fix that you need.

[kgp]

56 minutes ago, deeveedee said:

@KGP-iMacPro I only ask because OC 1.0.6 DEV has NO changes that are relevant to the problem that you're trying to fix (unless you need documentation changes).  Staying with an officially released version of OC is usually best when diagnosing / fixing a problem, unless the new OC DEV build has a fix that you need.

 

@deeveedee, attached the same EFI-Folder with OC 1.0.5 release. I really don't think that it is a OC or BCMC related issue. In my opinion, the issue of @BALDY_MAN would be better suited in the [Release] macOS Tahoe 26 thread for now. Anyway, everybody is invited to help. Maybe somebody with a Z690 mainboard and a RX6800XT would be better suited to fix his issue 👍

 

From the BCMC side, everything is set properly in the config.plist. I cannot check if he uses the correct device path under device properties though, or if he has copied brcmfmac43602-pcie_7.35.177.61.bin to /usr/local/share/firmware/wifi/

 

WIFI EFI TEST.zip  

Edited October 31, 2025 by KGP-iMacPro

[kgp]

41 minutes ago, eSaF said:

There is one setting that is puzzling to me.

When I enter the Max value of 24.99.99 in the config.plist for the Lucy.kext, a Panic occurs.

 

Remove the value and the machine boots into all 3 Mac versions from one EFI.

WIFI is available in all 3, only Tahoe lacks Lan.

 

Attached is the config.plist with the best favourable results.

Cheers.

config.plist.zip 6.42 kB · 1 download

 

That's really weird.. Everything works perfectly such on my system.  I would expect that with max kernel 24.99.99 at the Lucy kext, your system would boot without problems at least under Sequoia and Sonoma and you would have Lucy Ethernet available...

 

I guess, you observe also a panic under Tahoe with the Lucy kext just disabled before boot?

If yes, there might be problems with the DEXT Driver on your system.

If not, you should get a result like this:

 

 

 

 

BTW.. your csr-active-config is still 67080000 ! Maybe this causes the issue with the DEXT Driver? For testing purposes, try to use 03080000 and boot into Tahoe with the Lucy kext disabled in the config.plist.  

   

Edited October 31, 2025 by KGP-iMacPro

[kgp]

17 minutes ago, eSaF said:

I will try your suggestion, meanwhile can you post a pic of exactly what the your DEXT Driver look like.

I tried to find it but mine does not fit the description you posted previously.

 

 

 

I don't really understand what you mean by "a pic of exactly what the your DEXT Driver look like". How the DEXT Driver is implemented by macOS I posted already in the previous post. Below, a screenshot, where the DEXT Drivers are located on our macOS Systems: /System/Library/DriverExtensions/; In red the one for my X550-AT2 NICs.

 

 

If there is a DEXT Driver for your NIC, it should be injected automatically as soon you disable the Lucy kext and you have AppleVTD enabled. 👍  

Edited October 31, 2025 by KGP-iMacPro

[Mieze]

@eSaF Tahoe comes with a native Skywalk driver for Realtek RTL8125 NICs, aka AppleEthernetRL.kext, but this driver doesn't work with chips which can be found on mainboards. On one of my machine (Z790 from signature), AppleEthernetRL.kext, gracefully exits after failing to acquire the NIC's MSI interrupt and on the other machine (MSI Z490 from signature) it causes a KP. As LucyRTL8125 takes precedence over AppleEthernetRL.kext, it prevents the KP.

 

Mieze 😺

Edited October 31, 2025 by Mieze

[kgp]

1 hour ago, eSaF said:

Yes @Mieze is absolutely correct, the IORegistryExplorer results is certainly different on this Z490.

The curious thing is with the change of SIP value and the Lucy.kext Max data entry, when I reboot and clean the NvRAM, the machine panics booting into Tahoe.

 

If I then reboot without cleaning the NvRAM, the boot up continues all the way to the Desktop.

I have attached the results from IORegistry after booting into Tahoe.

 

I will now boot into Sequoia or Sonoma and observe results.

I have been on this from dawn, taken 2 steps forward and a Gazillion backward. 

  Hide contents

 

 

As @Mieze says, unfortunately Apple's native AppleEthernetRL.kext does not properly work with your Realtek RTL8125 onboard NIC, thus I am afraid that for now you are left without Ethernet when using BCMC with AppleVTD under Tahoe, until there is a fix for LucyRTL8125.kext by Mieze. You can remove the max kernel flag, as it is not of any help on your system. However, LucyRTL8125.kext properly works under Sequoia and Sonoma. In your given situation, I would rather choose to use LucyRTL8125.kext with DisableIOMapper=true (without AppleVTD) under Tahoe and forget about BCMC until there is a fix for the LucyRTL8125.kext that works with AppleVTD enabled also under Tahoe.

 

Nevertheless consider all your efforts and contributions in this direction so far as very important for the community and all other users of BCMC and Realtek RTL8125 onboard NICs. 👍 And don't forget, you are all set with respect to BCMC, as soon there is a LucyRTL8125.kext update for Tahoe. 💯

By then,  AppleBCMWLANCompanion.kext should also be more stable and likely implement all AWDL features. Thanks for climbing mountains to figure out all this together.. 😉

Edited October 31, 2025 by KGP-iMacPro

[meg2014]

2 hours ago, eSaF said:

Yes thanks Bro, I have done exactly that.

You are correct, it was indeed a learning curve even though somewhat frustrating at times.

 

Again, thank you for your patience and guidance along the way.

Although I am planning to buy a Mac mini, I guess it will be pretty boring compared to problem solving on a Hack.

 

Cheers.

 

Wait, @eSaF, you're not complaining about your soon to be Mac Mini to be too easy to use and most likely it will not need all the maintenance and troubleshooting that a Hackintosh needs?  You're missing it (your Hackintosh) already?

[BALDY_MAN]

8 hours ago, KGP-iMacPro said:

 

@deeveedee, attached the same EFI-Folder with OC 1.0.5 release. I really don't think that it is a OC or BCMC related issue. In my opinion, the issue of @BALDY_MAN would be better suited in the [Release] macOS Tahoe 26 thread for now. Anyway, everybody is invited to help. Maybe somebody with a Z690 mainboard and a RX6800XT would be better suited to fix his issue 👍

 

From the BCMC side, everything is set properly in the config.plist. I cannot check if he uses the correct device path under device properties though, or if he has copied brcmfmac43602-pcie_7.35.177.61.bin to /usr/local/share/firmware/wifi/

 

WIFI EFI TEST.zip 9.8 MB · 3 downloads   

@KGP-iMacPro Thanks for your help still no joy just crashes and restarts. here,s a screen shop of the file path

[kgp]

7 hours ago, BALDY_MAN said:

@KGP-iMacPro Thanks for your help still no joy just crashes and restarts. here,s a screen shop of the file path

 

@BALDY_MAN, I don't know if you followed the recent intents and discussion concerning the LucyRTL8125Ethernet.kext above. It does not work under Tahoe with AppleVTD enabled. From inspecting your EFI, I suppose, that you also employ Realtek RTL8125 onboard NICs. Thus, also the max kernel 24.99.99 flag, I recently introduced in your config.plist, won't work on your system, as Apple's native Skywalk driver, i.e. AppleEthernetRL.kext, won't take over and just result in a KP under Tahoe. Please remove again the max kernel 24.99.99 flag at LucyRTL8125Ethernet.kext in your config.plist. Unfortunately, you will be left without ethernet for now when using BCMC with AppleVTD (DisableIOMapper=False) under Tahoe. Now if you still want to continue testing BCMC, please ensure that your system properly boots and works without BCMC at first place. If your KPs are really BCMC related, you can upload respective kernel panic logs for @Austere.J to be analysed and handled. To find the panic logs, go to "System Information" -> "logs" -> "Panic (system crashes) log" or see "/Library/Logs/DiagnosticReports/Kernel-2025-xx-xx-xxxxxx.panic".

 

Hope this helps somehow.. 👍

Edited November 1, 2025 by KGP-iMacPro

[schrup21]

edit: just saw the Lucy issue was already clarified  - somehow I ididn't see all the posts...

 

What is if you disable Lucy? 
But another question: why at all? Is it not enough to turn off the LAN?

 

Spoiler

 

Edited November 1, 2025 by schrup21

[kgp]

1 hour ago, schrup21 said:

edit: just saw the Lucy issue was already clarified  - somehow I ididn't see all the posts...

 

What is if you disable Lucy? 
But another question: why at all? Is it not enough to turn off the LAN?

 

  Reveal hidden contents

 

 

This all is not about Laptops like in your case. Nearly nobody with a PC prefers WIFI over LAN. In any case, one with Realtek RTL8125 onboard NICs can just leave LucyRTL8125Ethernet.kext enabled and just stays without ethernet under Tahoe when using BCMC with AppleVTD enabled for now. The KP is produced by Apple's native Skywalk driver, i.e. AppleEthernetRL.kext, in case of Realtek RTL8125 onboard NICs, which should take over once LucyRTL8125Ethernet.kext is disabled. With DisableIOMapper=true (without AppleVTD) LucyRTL8125Ethernet.kext still works flawless under Tahoe, but like this it is impossible to use BCMC. No issues at all under Sequoia and Sonoma. Just carefully read the latest postings 😉

Edited November 1, 2025 by KGP-iMacPro