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Linux Installation guide for Asus USB-BT400

Download driver

curl 'https://dlcdnets.asus.com/pub/ASUS/wireless/USB-BT400/DR_USB_BT400_1201710_Windows.zip' \
  -o bt400-driver.zip

Driver & tools for bt400 can be found here

Find out what is a filename for your driver

Plug device and do

dmesg

You should see something like that

[ 4507.934913] usb 2-1.6: new full-speed USB device number 6 using ehci-pci
[ 4508.046595] usb 2-1.6: New USB device found, idVendor=0b05, idProduct=17cb
[ 4508.046599] usb 2-1.6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 4508.046600] usb 2-1.6: Product: BCM20702A0
[ 4508.046602] usb 2-1.6: Manufacturer: Broadcom Corp
[ 4508.046603] usb 2-1.6: SerialNumber: 5CF3709911C3
[ 4508.157541] Bluetooth: hci0: BCM: chip id 63
[ 4508.158516] Bluetooth: hci0: BCM: features 0x07
[ 4508.174532] Bluetooth: hci0: BCM20702A
[ 4508.175548] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000
[ 4508.175568] bluetooth hci0: Direct firmware load for brcm/BCM20702A1-0b05-17cb.hcd failed with error -2
[ 4508.175571] Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-0b05-17cb.hcd not found

So your device id is 0b05:17cb -> 0B05:17CB

and the driver should be pleace here: /lib/firmware/brcm/BCM20702A1-0b05-17cb.hcd

curl -s 'https://aur.archlinux.org/cgit/aur.git/tree/filelist.txt?h=bcm20702a1-firmware' \
 | grep '0B05:17CB'
0B05:17CB: BCM20702A1_001.002.014.1443.1467.hex

So the file name is BCM20702A1_001.002.014.1443.1467.hex

Prepare driver for linux

unzip bt400-driver.zip
cd Win10_USB-BT400_DRIVERS/Win10_USB-BT400_Driver_Package/64
hex2hcd BCM20702A1_001.002.014.1443.1467.hex -o BCM20702A1-0b05-17cb.hcd

Copy driver to the right place

sudo mkdir -p /lib/firmware/brcm/
sudo cp BCM20702A1-0b05-17cb.hcd /lib/firmware/brcm/

Re-connected the device

If everything is ok youd should see something like that

[ 4547.358736] usb 2-1.6: new full-speed USB device number 7 using ehci-pci
[ 4547.471204] usb 2-1.6: New USB device found, idVendor=0b05, idProduct=17cb
[ 4547.471208] usb 2-1.6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 4547.471210] usb 2-1.6: Product: BCM20702A0
[ 4547.471212] usb 2-1.6: Manufacturer: Broadcom Corp
[ 4547.471213] usb 2-1.6: SerialNumber: 5CF3709911C3
[ 4547.581275] Bluetooth: hci0: BCM: chip id 63
[ 4547.582284] Bluetooth: hci0: BCM: features 0x07
[ 4547.598294] Bluetooth: hci0: BCM20702A
[ 4547.599218] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000
[ 4548.468305] Bluetooth: hci0: BCM20702A1 (001.002.014) build 1467
[ 4548.484290] Bluetooth: hci0: Broadcom Bluetooth Device

Install blueman & pulse audio bluetooth module

sudo apt install blueman pulseaudio-module-bluetooth
0489:E047: BCM20702A1_001.002.014.1055.1061.hex
413C:8197: BCM20702A1_001.002.014.1443.1447.hex
413C:8143: BCM20702A1_001.002.014.1443.1449.hex
13D3:3411: BCM20702A1_001.002.014.1443.1450.hex
0A5C:21E8: BCM20702A1_001.002.014.1443.1459.hex
0A5C:21EC: BCM20702A1_001.002.014.1443.1460.hex
0A5C:21DE: BCM20702A1_001.002.014.1443.1461.hex
0A5C:2169: BCM20702A1_001.002.014.1443.1462.hex
0A5C:21FD: BCM20702A1_001.002.014.1443.1463.hex
0489:E046: BCM20702A1_001.002.014.1443.1465.hex
0489:E059: BCM20702A1_001.002.014.1443.1466.hex
0B05:17CB: BCM20702A1_001.002.014.1443.1467.hex
0B05:17B5: BCM20702A1_001.002.014.1443.1468.hex
0B05:17CF: BCM20702A1_001.002.014.1443.1469.hex
13D3:3384: BCM20702A1_001.002.014.1443.1477.hex
13D3:3392: BCM20702A1_001.002.014.1443.1478.hex
13D3:3404: BCM20702A1_001.002.014.1443.1479.hex
13D3:3418: BCM20702A1_001.002.014.1443.1480.hex
13D3:3413: BCM20702A1_001.002.014.1443.1481.hex
050D:065A: BCM20702A1_001.002.014.1443.1482.hex
145F:01A3: BCM20702A1_001.002.014.1443.1483.hex
0489:E042: BCM20702A1_001.002.014.1443.1484.hex
0489:E032: BCM20702A1_001.002.014.1443.1485.hex
0489:E04F: BCM20702A1_001.002.014.1443.1486.hex
105B:E066: BCM20702A1_001.002.014.1443.1487.hex
04CA:2003: BCM20702A1_001.002.014.1443.1488.hex
04CA:2004: BCM20702A1_001.002.014.1443.1489.hex
04CA:2005: BCM20702A1_001.002.014.1443.1490.hex
04CA:200A: BCM20702A1_001.002.014.1443.1492.hex
04CA:200B: BCM20702A1_001.002.014.1443.1493.hex
04CA:200C: BCM20702A1_001.002.014.1443.1494.hex
04CA:200E: BCM20702A1_001.002.014.1443.1499.hex
13D3:3435: BCM20702A1_001.002.014.1443.1501.hex
13D3:3456: BCM20702A1_001.002.014.1443.1502.hex
04CA:200F: BCM20702A1_001.002.014.1443.1521.hex
0489:E087: BCM20702A1_001.002.014.1443.1532.hex
0A5C:216F: BCM20702A1_001.002.014.1443.1572.hex
0B05:180A: BCM20702A1_001.002.014.1443.1714.hex
0A5C:21F1: BCM20702A1_001.002.014.1483.1645.hex
0A5C:216B: BCM20702A1_001.002.014.1483.1646.hex
0A5C:21E1: BCM20702A1_001.002.014.1483.1647.hex
0A5C:21FB: BCM20702A1_001.002.014.1483.1648.hex
0A5C:21E3: BCM20702A1_001.002.014.1483.1649.hex
0489:E07A: BCM20702A1_001.002.014.1483.1651.hex
0489:E052: BCM20702A1_001.002.014.1483.1668.hex
0A5C:21E6: BCM20702A1_001.002.014.1483.1669.hex
0A5C:21F4: BCM20702A1_001.002.014.1483.1670.hex
0A5C:21F3: BCM20702A1_001.002.014.1483.1671.hex
0930:021E: BCM20702A1_001.002.014.1483.1672.hex
0930:0221: BCM20702A1_001.002.014.1483.1673.hex
0930:0223: BCM20702A1_001.002.014.1483.1674.hex
0A5C:640B: BCM20702A1_001.002.014.1483.1709.hex
19FF:0239: BCM20702B0_002.001.014.0527.0557.hex
0A5C:6410: BCM20703A1_001.001.005.0197.0375.hex
0A5C:21FE: BCM43142A0_001.001.011.0161.0186.hex
0A5C:21DC: BCM43142A0_001.001.011.0161.0187.hex
0A5C:21D3: BCM43142A0_001.001.011.0197.0218.hex
0A5C:21D6: BCM43142A0_001.001.011.0197.0220.hex
0A5C:21D8: BCM43142A0_001.001.011.0197.0222.hex
0A5C:2167: BCM43142A0_001.001.011.0249.0265.hex
04CA:2007: BCM43142A0_001.001.011.0277.0279.hex
0489:E062: BCM43142A0_001.001.011.0277.0280.hex
185F:2167: BCM43142A0_001.001.011.0277.0292.hex
13D3:3484: BCM43142A0_001.001.011.0277.0302.hex
13D3:3482: BCM43142A0_001.001.011.0277.0304.hex
04F2:B49D: BCM43142A0_001.001.011.0277.0308.hex
105B:E065: BCM43142A0_001.001.011.0311.0312.hex
04F2:B4A1: BCM43142A0_001.001.011.0311.0316.hex
04CA:2006: BCM43142A0_001.001.011.0311.0327.hex
0A5C:216C: BCM43142A0_001.001.011.0311.0328.hex
0A5C:216D: BCM43142A0_001.001.011.0311.0329.hex
04CA:2009: BCM43142A0_001.001.011.0311.0330.hex
0489:E055: BCM43142A0_001.001.011.0311.0331.hex
13D3:3388: BCM43142A0_001.001.011.0311.0332.hex
13D3:3389: BCM43142A0_001.001.011.0311.0333.hex
0930:0225: BCM43142A0_001.001.011.0311.0334.hex
0930:0226: BCM43142A0_001.001.011.0311.0334.hex
13D3:3427: BCM43142A0_001.001.011.0311.0334.hex
0930:021F: BCM43142A0_001.001.011.0311.0335.hex
0A5C:216A: BCM43142A0_001.001.011.0311.0336.hex
04CA:2012: BCM43142A0_001.001.011.0311.0339.hex
0489:E096: BCM43142A0_001.001.011.0311.0340.hex
0A5C:21D7: BCM43142A0_001.001.011.0311.0341.hex
0930:0229: BCM4335C0_003.001.009.0066.0104.hex
0A5C:216E: BCM4335C0_003.001.009.0066.0105.hex
0A5C:2168: BCM4335C0_003.001.009.0066.0108.hex
0489:E079: BCM4335C0_003.001.009.0066.0115.hex
04CA:2016: BCM4335C0_003.001.009.0066.0121.hex
0A5C:6414: BCM4350C5_003.006.007.0095.1668.hex
0A5C:6412: BCM4350C5_003.006.007.0095.1703.hex
0A5C:6413: BCM4350C5_003.006.007.0095.1704.hex
0489:E097: BCM4356A2_001.003.015.0046.0104.hex
04CA:2014: BCM4356A2_001.003.015.0046.0120.hex
04CA:2013: BCM4356A2_001.003.015.0046.0122.hex
13D3:3473: BCM4356A2_001.003.015.0046.0125.hex
13D3:3488: BCM4356A2_001.003.015.0046.0127.hex
0B05:181D: BCM4356A2_001.003.015.0046.0132.hex
2B54:5600: BCM4356A2_001.003.015.0046.0154.hex
2B54:5601: BCM4356A2_001.003.015.0046.0162.hex
04F2:B4A2: BCM4356A2_001.003.015.0046.0183.hex
13D3:3492: BCM4356A2_001.003.015.0046.0195.hex
13D3:3485: BCM4356A2_001.003.015.0046.0197.hex
0A5C:640A: BCM4356A2_001.003.015.0080.0225.hex
0A5C:640E: BCM4356A2_001.003.015.0080.0225.hex
@adrianvg
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adrianvg commented Oct 15, 2021

Running Kubuntu 20.04 LTS, the Asus BT400 and a pair of Bose QC35-II.
Everything's there filewise. When pressing Connect to headset in Blueman, it connects then disconnects after a few seconds.
This has worked before, kinda'.

I'm getting to believe bluetooth support in *ubuntu is more of a hit or miss experience. :-/

Edit:
Found this https://askubuntu.com/questions/381143/bt-dongle-asus-usb-bt400-not-working, and disabled bluetooth on phone. Still no go.

@fmgburner25
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fmgburner25 commented Nov 2, 2021

@ ssledz

Thank you soooo much.

I have a HP HP-8760w with Kubuntu 21.04 and the ASUS BT400 and I have tried it as you did.

Before the ASUS dongle with the default driver stops with my bluetooth mouse at 3.0 and 5.0 after 30 minutes of using it.

Into the terminal I got with "sudo dmesg"

[50363.374562] Bluetooth: hci0: BCM: firmware Patch file not found, tried

after the driver installing I got with "sudo dmesg"

[52291.385186] Bluetooth: hci0: BCM20702A1 'brcm/BCM20702A1-0b05-17cb.hcd' Patch

Now I have to check if it is better with any break.

One problem I have, when I try onto my mobile Poco NFC Phone to send a *.mp3 file to my PC then it played the song and not send it.

Or: I don't know where the file is located.

@sobryan
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sobryan commented Nov 12, 2021

These were good instructions to follow for Ubuntu 20.04.3 LTS. The initial url for "DR_USB_BT400_1201710_Windows.zip" is still valid and the latest available when I ran the instructions. Thank you for these instructions!

@RememberTheAir
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Tried this on Pop!OS 21.10, worked perfectly! Thank you!

@gcastillom90
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Worked for Ubuntu 20.04. Thanks a lot!

@eternalprisms
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Thanks a bunch! You're awesome ٩(。•́‿•̀。)۶
Working perfectly on 20.04.1-Ubuntu.

@rolandf
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rolandf commented Aug 5, 2022

Thank you very much, clear instructions that worked the first try!

@imkermichel
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Worked like a charm. Debian 11 server.

@RomanSteinberg
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Ubuntu 20.04.
Bluetooth headset was working fine about 5 minutes. After that it was disconnected and never back to work (turn on/off bluetooth, pairing once more, reboot). Once I decided to remove Blueman (and reboot) and headset started to work fine again.

@farlies
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farlies commented Apr 30, 2023

A cunning hack that is still relevant and effective in Arch Linux 2023.04.01. Bravo.

@markducks
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markducks commented Aug 9, 2023

Thank you so much <3. Ubuntu 22.04 worked perfectly.

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