I tried everything I could find. Airportitlwm, itwlm, BlueToolFixup.kext, IntelBluetoothFirmware.kext, IntelBTPatcher.kext. Newest even older versions, but it is still the same. All possible combinations of above mentioned kexts, but the result was the same. Apart from when I tried Airportitlwm 2.1.0 for Monterey, that time bluetooth worked, but when I tried connecting to Wi-Fi the whole notebook crashed. Also with itlwm bluetooth did not even turn on. Any Ideas?