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.

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! :)

@peteristhegreat Hey Peter. And anyone else, can someone verify if theyr bluetooth headset work fine for them using this similar adapter? I bought this adapter and, since I've had it it has always given me issues. Which it didn't at earlier stage but after a windows 10 update, it has always persisted. Even clean installing on a Win11 system, it worked at first but then somehow stopped working properly. At the point, I can't hear any voice when mic is being used. And it happens with all kinds of headphones. It doesn't on linux so, there's no issues there.

TP-Link silently release V2 version of UB500 which was Bluetooth 5.3 firmware flashed by default.
Bluetooth adapter drivers 1.9.1051.xxx for win11/win10/win8.1/win7 available from TP-Link web site upgrades UB500 V1 to Bluetooth 5.3.
https://static.tp-link.com/upload/product-overview/2024/202403/20240328/UB500_2.0%20Datasheet.pdf
https://www.tp-link.com/en/support/download/ub500/

TP-Link silently release V2 version of UB500 which was Bluetooth 5.3 firmware flashed by default. Bluetooth adapter drivers 1.9.1051.xxx for win11/win10/win8.1/win7 available from TP-Link web site upgrades UB500 V1 to Bluetooth 5.3. https://static.tp-link.com/upload/product-overview/2024/202403/20240328/UB500_2.0%20Datasheet.pdf https://www.tp-link.com/en/support/download/ub500/

Any chance you can extract the FW from there so one can use it on Linux?

Realtek Bluetooth 5.4 drivers available from Microsoft Update Catalog
https://catalog.update.microsoft.com/Search.aspx?q=realtek%20bluetooth%205.4

it has to be installed manually by force because the vid/pid doesn't match.

Drivers name convention:
x.x.1040.1xxx for Windows 8.1 x64
x.x.1040.4xxx for Windows 8.1 x86
x.x.1038.3xxx for Windows 10 x64
x.x.1038.2xxx for Windows 10 x86
x.x.1051.xxxx for Windows 11 x64

1.9.xxxx.xxxx version is for rtl8761
1.10 and 2.10 are for other rtl chips.

my orico bta-508 shows HCI 13.56789 / LMP 13.51041 Win10/x64

You can't use more than one Bluetooth adapter at a time on a Windows PC.
If you want to use a specific adapter, disable the other adapters in Device Manager.
I had to disable internal bt adapter to make dongle works.

TP-Link silently release V2 version of UB500 which was Bluetooth 5.3 firmware flashed by default. Bluetooth adapter drivers 1.9.1051.xxx for win11/win10/win8.1/win7 available from TP-Link web site upgrades UB500 V1 to Bluetooth 5.3. https://static.tp-link.com/upload/product-overview/2024/202403/20240328/UB500_2.0%20Datasheet.pdf https://www.tp-link.com/en/support/download/ub500/

Any chance you can extract the FW from there so one can use it on Linux?

check current BT version
$hciconfig -a
download and extract cab file
$file-roller -h c1f14a17-4aed-40ff-85cb-7710d0244f42_4433154fbd9a4a8173ee994d24ee7eb640714562.cab
backup current firmware
$sudo mv /lib/firmware/rtl_bt/rtl8761bu_fw.bin.zst /lib/firmware/rtl_bt/rtl8761bu_fw.bin.zst.old
copy new firmware (zst-ing of new firmware is optional)
$sudo cp rtl8761b_mp_chip_bt40_fw_asic_rom_patch_new.dat /lib/firmware/rtl_bt/rtl8761bu_fw.bin
remove and insert dongle, check new version
$hciconfig -a

Realtek Bluetooth 5.4 drivers available from Microsoft Update Catalog https://catalog.update.microsoft.com/Search.aspx?q=realtek%20bluetooth%205.4

it has to be installed manually by force because the vid/pid doesn't match.

Drivers name convention: x.x.1040.1xxx for Windows 8.1 x64 x.x.1040.4xxx for Windows 8.1 x86 x.x.1038.3xxx for Windows 10 x64 x.x.1038.2xxx for Windows 10 x86 x.x.1051.xxxx for Windows 11 x64

1.9.xxxx.xxxx version is for rtl8761 1.10 and 2.10 are for other rtl chips.

my orico bta-508 shows HCI 13.56789 / LMP 13.51041 Win10/x64

You can't use more than one Bluetooth adapter at a time on a Windows PC. If you want to use a specific adapter, disable the other adapters in Device Manager. I had to disable internal bt adapter to make dongle works.

Thank you.

Please note that x.x.1051.xxxx is also for Windows 10 x64.
I've downloaded this one and it works:
https://catalog.s.download.windowsupdate.com/d/msdownload/update/driver/drvs/2024/04/c1f14a17-4aed-40ff-85cb-7710d0244f42_4433154fbd9a4a8173ee994d24ee7eb640714562.cab

The driver works with my BT dongle with PID 0BDA-A725 (USB\VID_0BDA&PID_A725&REV_0200)
I had to force the installation as you have mentioned).

Side note: When a BT device is connected, AIDA64 is saying the radio is 5.1.

It's also the case with the previous driver, 1.9.1051.3004, (BT 5.3) that was installed by Windows Update.

Is there any pro or cons to use the newer driver instead of the previous one ?