Can't make USB Bluetooth work

Hi everyone, I just made a Hackintosh, everything is working perfectly except for the USB stick which should provide bluetooth.
I bought this model:
https://www.amazon.fr/gp/product/B015R7OA1U/?tag=tonymacx8607-21
As advised here.

I put the 'BrcmFirmwareRepo.kext' and 'BrcmPatchRAM2.kext' in /System/Library/Extensions

I dont see anything working...
When I launch kextstat I don't see the kext loaded.
When I try to load them by hand with kextload I receive an error:...

Can't make USB Bluetooth work