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.

The real question is: does the dongle actually have 5.4 features, or it's still a 5.0 with a newer driver ?

The real question is: does the dongle actually have 5.4 features, or it's still a 5.0 with a newer driver ?

Honestly not sure, I might be able to test it using some CLI tool, but I would need instructions.
The driver details report "HCI 13.56789 / LMP 13.51041", but whether this is actually true in the real world is TBD.
(In my case I don't really care, as long as the connection to my devices is stable now.)

EDIT: I can see that the second image in my previous post, after the update, failed to upload. I am reattaching it now 🤞
EDIT2: image upload failed again with "Access Denied", whatever. I think you get my point from text

Thank you so very kindly! This saved me 10 fold!

Got myself new 0bda:a728 device with true 5.4, driver 3013 installs automatically.

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).

Did not have to. :)

The drivers should install automatically for these 2 VID/PIDs:

VID_0BDA&PID_876F ; BT54
VID_0BDA&PID_A728

but should be able to be able to be installed manually for the other 79 VID/PIDs in the PidVid_List.dat file (open with hex editor) but probably not with 5.4 functionality.