Don't work BT in Ubuntu 16.04

Hi everybody.

Can any one help with BT on my dell Latitude 5480-9187 ?

sudo rfkill list:

0: dell-wifi: Wireless LAN
        Soft blocked: no
        Hard blocked: no
1: dell-bluetooth: Bluetooth
        Soft blocked: no
        Hard blocked: no
2: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
3: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no

sudo hciconfig -a:

hci0:   Type: BR/EDR  Bus: USB
        BD Address: 00:00:00:00:00:00  ACL MTU: 0:0  SCO MTU: 0:0
        DOWN
        RX bytes:215 acl:0 sco:0 events:10 errors:0
        TX bytes:30 acl:0 sco:0 commands:10 errors:0
        Features: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
        Packet type: DM1 DH1 HV1
        Link policy:
        Link mode: SLAVE ACCEP

sudo hciconfig hci0 up:

Can't init device hci0: No such file or directory (2)