Using latest firmware (C4B):
- double click "Services", then press "3" for "Network Configuration"
- press right arrow to the "Enable Bluetooth" box. Press the enter key and scroll to "Yes". Press the enter key to accept.
- hit "Apply&Reset" softkey.
After the phone reboots:
- double press "Headset" key
- with cursor in "Enable Bluetooth" box, hit Enter key to see checkmark in box
- with cursor in "Use Bluetooth headset" box, hit Enter key to see checkmark in box
- with Bluetooth headset prepared for pairing, move cursor to "Search" box and press Enter key
- once the device is found, move cursor to "Pair" box and press Enter key. Enter any security code to pair with the device.
- move cursor to "Set" box and press Enter key to make this the active bluetooth headset.