Edit: I believe the Bluetooth and Wifi is a combo, from the bcm43XX family.
There are a few websites touching on this install. I'll be trying to reinstall my bluetooth tomorrow.
I'll let you know how I go
Okay, I'm back with onboard bluetooth working.
Steps:
ENSURE YOU HAVE ALREADY INSTALLED THE UNIVERSAL USB3 KEXT FROM MULTIBEAST
I have noticed that a reinstall of this kext may affect bluetooth install, so ensure its up and running first.
Be sure to delete /Library/Preferences/com.apple.Bluetooth.plist BEFORE attempting install.
1. Find vendor & device ID (I used windows device manager, as I couldnt find it with IOregExplorer)
My vendor and device ID is: VID_0b05 (decimal: 2821) PID_17CF (decimal: 6095)
2. Copy IOBluetoothFamily.kext to desktop
3. IOBluetoothFamily.kext -> Show Contents ->
4. Navigate to -> Contents\Plugins\BroadcomBluetoothHostControllerUSBTransport.kext
5. BroadcomBluetoothHostControllerUSBTransport.kext -> Show Contents
6. Navigate to Contents\Info.plist
7. Open Info.plist in text editor (or plist editor, though I use text edit to copy from another property entry)
8a. Search "MediaLink BT4.0"
8b. I'm unsure if the location matters, but if you are particular - ensure the new entry is between:
The searched entry:
<key>BroadcomUSBBluetoothHCIController - MediaLink BT4.0 Adapter</key>
AND the following entry:
<key>BroadcomUSBBluetoothHCIController - Targus</key>
9. Create new Entry CHANGE VENDOR AND PRODUCT ID BELOW! (I think I copied mine from the entry above) Here is my example:
<key>BroadcomUSBBluetoothHCIController - MediaLink BT4.0 Adapter</key>
<dict>
<key>CFBundleIdentifier</key>
<string>com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport</string>
<key>IOClass</key>
<string>BroadcomBluetoothHostControllerUSBTransport</string>
<key>IOProviderClass</key>
<string>IOUSBDevice</string>
<key>idProduct</key>
<integer>6095</integer> <--- PRODUCT ID - CHANGE TO SUIT YOUR PRODUCT (And delete this text
<key>idVendor</key>
<integer>2821</integer> <--- VENDOR ID - CHANGE TO SUIT YOUR VENDOR (And delete this text
</dict>
(In reality, maaaaaybe the product id could be different - but vendor id should all be the same for rampage iv black)
10. Save Info.Plist
11. Drag modified IOBluetoothFamily.kext into Kext Utility (to ensure permissions are set and caches are updated)
12. Reboot and head into BIOS
13. Navigate to Advanced -> USB Configuration.
14. Enable EHCI Hand-Off
15. Save and Reboot
16. Enjoy bluetooth
Let me know how you all go