Realtek bluetooth usb adapter RTL8671b

Readme.md

The CD that came with the device listed RTL8671B, but it's not on Realtek's website. Instead the manual points you to:

https://www.mytechkey.com/pages/driver

4.Bluetooth 5.0 Dongle

Driver Link:

https://www.dropbox.com/s/gwo9lz777i82f70/BT5.0%20Driver.zip?dl=0

Hope that helps someone.

Update Github hosted link

https://github.com/peteristhegreat/drivers-backup/releases/tag/1.0

Direct link

https://github.com/peteristhegreat/drivers-backup/releases/download/1.0/BT5.0.Driver.zip

Feb 2021 Update

Adding visibility to @carkrueger 's comment below

If you look here: https://www.catalog.update.microsoft.com/Search.aspx?q=realtek+bluetooth+1.6.1015 You will find now: 1.6.1015.3014 from 11.01.2021

Direct download link: http://download.windowsupdate.com/c/msdownload/update/driver/drvs/2021/02/0d13721d-7aa7-47cf-887a-f53bcd228a5e_04c173bad44cec04d528d260392958dc6e5bcec3.cab

for backup purposes: h**ps://web.archive.org/web/20210216175344/http://download.windowsupdate.com/c/msdownload/update/driver/drvs/2021/02/0d13721d-7aa7-47cf-887a-f53bcd228a5e_04c173bad44cec04d528d260392958dc6e5bcec3.cab

Direct download and the popup window for 1.6.1015.3014 didn't initially work. I ended up needing to right click the link and select Save target as. For it to work for me on Windows 10, I unzipped the cab file into a folder and then used Device Manager to look at that folder. Worked like a charm.

Thanks for the latest firmware, it also shows now 5.3 instead of 5.0 but is there a way to verify it's really working like a genuine 5.3? I'm mostly interested in the better connection and battery usage with LE, if it doesn't really work it'd be worth the extra 5 bucks for a new dongle.
If it all works fine, is there a way to push it to linux-firmware or is this something Realtek would need to do?
Thanks!

Realtek does not need to do it(but would be great if they did), you only need to extract the FW and try it out on Linux. Then you can do a PR/patch for linux-firmware

Thanks for the quick reply!
Do we not need some kind of permission to distribute these?

rtl8761bu_fw.bin is already distributed in linux-firmware, unless you can find some license/text in the Win driver pkg
that prohibit distribution you should be fine.
Considering Realtek already pushes FW to linux-firmware I cannot see a problem.

If this FW supports LE you may need to enable that in kernel for this device though, in
drivers/bluetooth/btusb.c you have:

	/* Additional Realtek 8761BUV Bluetooth devices */
	{ USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
						     BTUSB_WIDEBAND_SPEECH },
	{ USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
	  					     BTUSB_WIDEBAND_SPEECH },
	{ USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
						     BTUSB_WIDEBAND_SPEECH },
	{ USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK |
						     BTUSB_WIDEBAND_SPEECH },
	{ USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK |
						     BTUSB_WIDEBAND_SPEECH },

BTUSB_VALID_LE_STATES might be needed, I don't known what this quirk does though.

I got an ID 0b05:190e ASUSTek Computer, Inc. ASUS USB-BT500 and I replace the rtl8761bu_fw.bin with the
FW in the driver above just for fun and it loads and starts at least.

@joakim-tjernlund Alright, I've sent the patch, we'll see how it goes. It's been a long time since I've had my name in the kernel, I'd say more than a decade, if it goes I'll owe you.

@joakim-tjernlund Alright, I've sent the patch, we'll see how it goes. It's been a long time since I've had my name in the kernel, I'd say more than a decade, if it goes I'll owe you.

Nice! Lets hope for the best :)

hmm, I just noticed that dmesg prints:

hci0: RTL: fw version 0xdcc6b3a8

which appears to be older than the current linux-firmware:

rtl_bt: Update RTL8761B BT USB firmware to 0xDFC6_D922
This firmware patch update for Realtek RTL8761B BT USB controller.

Release Version: 0xDFC6_D922

Signed-off-by: Hilda Wu <hildawu@realtek.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>

What is the latest version of the driver for the Realtek 8761b? I have bought a dongle from china and would love to use it on my pc.

What is the latest version of the driver for the Realtek 8761b? I have bought a dongle from china and would love to use it on my pc.

1.9.1051.3009
Use this link to check the latest version - https://www.catalog.update.microsoft.com/Search.aspx?q=realtek%20bluetooth%201.9.1051.* - manually add * at the end of the search field

@Anarch121 When I use this driver, all works well, and bluetooth devices are connected, but when I restart the Win10 computer it gives an issue with a Code 43, if I uninstall the device, and scan the hardware it installs and works correctly until next restart ?

Any ideas ?

@Anarch121 When I use this driver, all works well, and bluetooth devices are connected, but when I restart the Win10 computer it gives an issue with a Code 43, if I uninstall the device, and scan the hardware it installs and works correctly until next restart ?

Any ideas ?

No, i don't.
For all my device's on windows 10 and windows 11 everything working fine with the driver I've been posted

https://drive.google.com/file/d/1wpUzmOM05HxVxgtY-2n4sPTb2r1Tl9AC/view?usp=sharing

Thanks for the driver. Now device manager shows Realtek Bluetooth 5.3 Adapter and hci 12.56518 / lmp12.45992, my Easy Idea 5.0 adapter is based on Realtek RTL8761BUV chip, works now on 5.3 driver. However, it didn't solve my problem. I'm trying to launch the Anker Soundcore Note i (bt 5.2) headset, but there is still hope.

This worked and allowed me to install the driver for my Volans USB BT 5.3 and it now actually finds devices!
I created an account just to say THANK YOU! :)