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[HELP] Dell Latitude 3450 DW1820A BT not recognise on ioreg

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Recently I have installed DW1820A on my hack.
Wifi works great with AirportBcrmFix.kext and boot config bcrmfx-driver=1.
Custom SSDT for USB also has been done.
But I can't seem to see any BT on my ioreg.
Based on my understanding, BT required USB bus to works.


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Enable DellSMBiosPatch, known issue on some Dell system where the name is truncated.

Also add these 3 kext to /L/E

credits Mieze for updating it for Catalina


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The problem still persist, I still cannot see any BT under USB port.

For additional information, BT on windows 10 is detected under USB 2.0 port.

But it seems, in macOS it cannot appear, I am not really sure why.

I had done several method to enable USB port on my hack, but still failed.


Do you have any idea? Thanks


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