Bluetooth doesn't work after macOS Mojave update
I tried all available methods. 


Deleting files from:


/Library/Preferences - com.apple.Bluetooth.plist
~/Library/Preferences/ByHost - com.apple.Bluetooth.xxxxxxxxxxxxxxxxxx
and after reboot

To reset your Mac’s Bluetooth module
Tried through safe mode.
Created a new user.
Turned off the wifi
Made a clean install.
Install Catalina
Return from backup 10.14.5
After replacing the bluetooth board.


** Now everything works! **