Jump to content

dw1820a E7450 Mojave


Recommended Posts

Installed dw1820a as I saw below from Herve and wanted to try it out on e7450.



The way this was as done is by "removing AirPortBrcmNIC plugin kext from IO80211Family kext, patching AirPortBrcm4360 plugin kext with the id of the DW1820A" . It recognizes the chip and for 5-10mins it works but then freezes the whole system.

I did not feel like I needed AirportBrcmFixup kext, so ignored installing it.


Rest of the system is working, I don't really need BT.. Internet works with Ethernet cable, usb hotspot etc. But when I turn on the wifi with dw1820a, works at full blazing speed (5ghz channel) and after some time it freezes.


Attached are the system debug files (EFI, IOreg dump, and LE folder)


Appreciate if I can't get any pointers to resolve this .... TIA


btw, the sys report on wifi dumps this ('switched off the wifi)


Software Versions:

  CoreWLAN: 13.0 (1370.8)

  CoreWLANKit: 13.0 (1370.8)

  Menu Extra: 13.0 (1376.3)

  System Information: 12.0 (1300.2)

  IO80211 Family: 12.0 (1200.12.2)

  Diagnostics: 1.0 (805)

  AirPort Utility: 6.3.9 (639.9)



  Card Type: AirPort Extreme  (0x14E4, 0x23)

  Firmware Version: Broadcom BCM43xx 1.0 ( AirPortDriverBrcm4360-1325.2)

  MAC Address: 30:52:cb:82:43:47

  Locale: FCC

  Country Code: US

  Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 149, 153, 157, 161, 165

  Wake On Wireless: Supported

  AirDrop: Supported

  AirDrop Channel: 0

  Status: Off


Link to comment
Share on other sites

  • Administrators

Why don't you try as per the guide to see if it works better?


This being said, I'm starting to have doubts about that specific model of DW1820A that carries subsystem id 1028:0023. There are now several people experiencing issues with that model. I have 2 x DW1820A carrying subsystem id 1028:0021 and these work 100% Ok in my Latitude 7490. I'm yet to test them in my Toshiba.


According to wikidevi, there are 3 x different models of DW1820A carrying a same vend/dev id 14e4:43a3 but each carrying a different subsystem id:

  1. 1028:0021 -> tested Ok with 2 x different cards
  2. 1028:0022 -> not encountered yet, not tested
  3. 1028:0023 -> mostly bad feedback (several people reporting 5-10mins Ok, then system freeze). May be worth trying to inject subsystem-id 21000000 DATA to fake 1st model.


Link to comment
Share on other sites

Thanks, Merci Hervé! 


your update on the BCM4350 guide was very helpful. As I can confirm the dw1820a chips that have the label CN-08PKF4-xxxxxxx should be avoided.


Right now, I found an old dw1560 and replaced the CN-08PKF4 dw1820a card, world is good! So long journey, but for any future google searchers, go with dw1820a with # CN-0VW3T3 as Hervé suggested specifically.


Looks like all Brcm/dw1560 chips are in China/Hongkong as far as eBay goes :) 


Good day.

Link to comment
Share on other sites

This topic is now closed to further replies.

  • Create New...