Intermittent bluetooth failure (fail to scan) and fix DW1830

[stemnic]

OS: Catalina 10.15.4

I have been struggling now for a while with intermittent Bluetooth issues where sometimes when I boot Bluetooth is enabled but can't connect to any devices.

From what I understand this is due to the firmware not being loaded onto the Broadcom chipset due to open device failure in BrcmPatchRAM.

It seems like if you add these boot variables bpr_probedelay=200 bpr_initialdelay=400 bpr_postresetdelay=400 as per README in clover.conf the issue will disapear or I assume be less occurant.

Also as an warning to anyone else there also seems to be issued with the latest BrcmPatchRAM (2.5.3) kext version for DW1830 where it refuses to inject the bluetooth device into macos though checking the logs of the kext does not make it apperent why.

[d3myz]

I'm experiencing the same issue. Firmware is valid, but it cannot open the device.