Linux Installation guide for Asus USB-BT400

asus-bt400-linux-install.md

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

filelist.txt

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

Worked for Ubuntu 20.04. Thanks a lot!

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

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

Worked like a charm. Debian 11 server.

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.