Configuring your BCM207020A0 Bluetooth Dongle with HSP

If you’re using an IOGear GBU521 Low Energy Bluetooth 4.0 Dongle like me, and
you’re trying to get your bluetooth headset w/ microphone to work (mic input),
you probably want to check this out.

Spent quite a bit of time attempting to solve this.

Hopefully this will save you sometime.

Step 1: Find out what’s your dongle device id

  $ lsusb | grep Bluetooth
  Bus 003 Device 029: ID 0a5c:21e8 Broadcom Corp. BCM20702A0 Bluetooth 4.0

In this case, its 0a5c:21e8

Step 2: Download the iogear driver

From here. Download
the Windows XP version.

If you’re using the same device as me, you can go straight to Step 5

Step 3

Extract the file out, you should find a file named in a similar vein as

Step 4

Open the file up, and search for 21e8. It will tell you which .hex file to

With that .hex file, extract it out, and follow the instructions over at

Step 5

If you’re here because I told you to do so after Step 2, you can get the .hcd
file that worked for me.

Grab the file fw-0a5c_21e8.hcd

Take the file and copy it to your /lib/firmware directory and plug in and
out your USB dongle again.

Hope this helps!


Archlinux BBS

Ubuntu Bug Report - 1065400