Don't use bcm4352bt.kext with the Azurewave CE123H unless you want Bluetooth only. Use bcm4352.kext for WiFi + BT. So I suggest you delete bcm4352bt.kext from /System/Library/Extensions and install bcm4352.kext and BTFirmwareUploader.kext.
Follow the 10.10 portion of this guide. If you use Clover it's easy; just copy and paste the various sections of config-bcm94352-100.plist.zip to your config.plist. These modifications enable Airport, 5 Ghz and Handoff.
NOTE: The instructions incorrectly state to place BTFirmwareUploader.kext in Clover/EFI/CLOVER/kexts/10.10. You should use DPCIManager instead (then repair and re-build cache).
Firmware should be v14 c5575 if it installed correctly.