Bluetooth not working on ASUS VIVO PC VC60

[Semant1ka]

Hello everybody,
for a few days, I have been struggling to enable Bluetooth module on my Asus Vivo PV VC60 nettop, and I feel that I need some help from the wisdom of the crowd...
My nettop has a Wifi module which also supposed to support Bluetooth 4.0. On the sticker on the bottom of the nettop Wifi adapter model described as Lite-On WCBN612AH-AD 2ANT (however the internet knows nothing about such adapter model)

I am currently running Debian Jessie on this nettop, and judging on bash commands output (provided below) BT should work, but it neither discoverable nor can discover any other devices.
I tried to look for drivers for this device and found information only on similar model https://wikidevi.com/wiki/Lite-On_WCBN612AH-H1 ,however, it seems that I have ath9k installed and running already.

Also, I have found a kind of similar situation on Ubuntu forum https://ubuntuforums.org/showthread.php?t=2260501 , but once again it seems that there should be a driver for my device + I was not able to find any .cab files for download.

Unlikely BT, WiFi is working smoothly, I was able to set up and run WiFi hotspot. I haven't try to boot in any other OS yet on this nettop, so I don't know if BT works there.

So here is my set up:

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dmesg | grep -i blue
[    8.069487] Bluetooth: Core ver 2.19
[    8.069519] Bluetooth: HCI device and connection manager initialized
[    8.069529] Bluetooth: HCI socket layer initialized
[    8.069533] Bluetooth: L2CAP socket layer initialized
[    8.069552] Bluetooth: SCO socket layer initialized
[   15.813634] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   15.813640] Bluetooth: BNEP filters: protocol multicast
[   15.813653] Bluetooth: BNEP socket layer initialized

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sudo lshw -C network
  *-network               
       description: Wireless interface
       product: QCA9565 / AR9565 Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlan0
       version: 01
       serial: c8:ff:28:7e:fb:a7
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
       configuration: broadcast=yes driver=ath9k driverversion=3.16.0-4-amd64 firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
       resources: irq:17 memory:f7d00000-f7d7ffff memory:f7d80000-f7d8ffff

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hcitool dev
Devices:
    hci0    C8:FF:28:7F:16:FF

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hciconfig -a
hci0:    Type: BR/EDR  Bus: USB
    BD Address: C8:FF:28:7F:16:FF  ACL MTU: 1022:8  SCO MTU: 183:5
    UP RUNNING PSCAN INQUIRY 
    RX bytes:14147 acl:0 sco:0 events:2402 errors:0
    TX bytes:16079 acl:0 sco:0 commands:2011 errors:0
    Features: 0xff 0xfe 0x0d 0xfe 0xd8 0x7f 0x7b 0x8f
    Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
    Link policy: RSWITCH HOLD SNIFF 
    Link mode: SLAVE ACCEPT 
    Name: 'debian'
    Class: 0x000104
    Service Classes: Unspecified
    Device Class: Computer, Desktop workstation
    HCI Version: 4.1 (0x7)  Revision: 0x3101
    LMP Version: 4.1 (0x7)  Subversion: 0x1
    Manufacturer: Atheros Communications, Inc. (69)

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sudo rfkill list
0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

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lsmod | grep blue
bluetooth             374429  21 bnep,btusb
6lowpan_iphc           16588  1 bluetooth
rfkill                 18867  6 cfg80211,bluetooth,asus_wmi
crc16                  12343  2 ext4,bluetooth

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lspci -nnk | grep -iA2 net
02:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01)
    Subsystem: ASUSTeK Computer Inc. Device [1043:85f2]
    Kernel driver in use: ath9k
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)
    Subsystem: ASUSTeK Computer Inc. Device [1043:8554]
    Kernel driver in use: r8169

[phenest]

I know this isn't very helpful, but my research suggests to avoid Qualcomm hardware. I have an ASUS P8P67 EVO motherboard with Qualcomm Atheros AR3011 bluetooth adapter, and I can't get that to work properly neither.

[Semant1ka]

Finally found the solution, maybe it will be helpful for someone.

I've installed Windows 7 as the second OS, manually downloaded drivers from ASUS website and installed them on the device, after this Bluetooth started working both on Windows and Debian (and Ubuntu Live CD).
It seems that BT adapted needs a firmware update and installing drivers from Windows can provide this update.