나수환 Posted October 5, 2020 Share Posted October 5, 2020 (edited) I was using big sur beta, but I decided to use Wifi And Bluetooth chipset on my laptop. So I started to downgrade macOS Version. WIFI : Had no problem using from 10.11 to 10.15 (Catalina) by replacing IO80211Family.kext (with Airport40.kext plugin inside) Bluetooth : Some Versions of macOS didn't upload firmware to the chipset and was unable to find other bluetooth devices. The only way to get bluetooth work in macOS is booting to Windows and rebooting to macOS WIFI : And I reverted back to macOS Big Sur Beta 9. Now when I try to replace IO80211Family.kext to older one (With Atheros Support) and rebuild cache using kmutil, it says kext linking had failed. And when I replace the kext with patched one I found on the internet, it does builds cache sucessfully, but after a reboot it shows kernel panic. How to get this Wifi working? BlueTooth : Is there no way to upload firmware to my bluetooth chipset w/o booting to windows? Edited October 5, 2020 by 나수환 Quote Link to comment Share on other sites More sharing options...
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