Bluetoolfixup.kext !!link!!

BrcmFirmwareData.kext (if needed for firmware upload) BluetoolFixup.kext (do NOT include BrcmBluetoothInjector.kext)

BluetoolFixup.kext does not function in isolation. It has specific dependencies and usage requirements: bluetoolfixup.kext

It declares a fake dependency on com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport , tricking the kernel into loading the original Apple kext from the system’s /System/Library/Extensions/ (if present) or a restored version. BrcmFirmwareData

Note: Do use BrcmBluetoothInjector.kext on macOS 12+; use BluetoolFixup.kext instead. use BluetoolFixup.kext instead.