Hi sssyurrr, I have tried to include bcm4352.kext as well in my system, but still no luck. A bit history, before yosemite, my laptop running maverick with wifi & bluetooth working flawlessly (BCM94352HMB - Device ID: 04CA 200B). I tapped pin 51 so i can turn ON & OFF bluetooth via sys pref. After upgrade to Yosemite 10.10.3, my bluetooth works around 2 hours, after that disappeared. Until now i'm struggling to bring back the bluetooth but still no luck. Hmmm.. now i'm clueless and begin to think to switch to USB dongle instead Cheers,