Request for Missing Bluetooth Firmware for Realtek D evice (VID 13D3 / PID 3612 — RTL8852CE)

Dear Realtek Support Team,

I am writing to request assistance with missing Linux firmware for a
Realtek-based Bluetooth device used in my ASUS laptop (System Model: ASUS
TUF Gaming F16 FX608JH_FX608JH).
The device details are:

   -

   *Vendor ID:* 13D3
   -

   *Product ID:* 3612
   -

   *Reported Manufacturer:* Realtek
   -

   *Chipset Family:* RTL8852CE (WiFi + BT combo)

On Linux, the Bluetooth controller is detected by the btusb driver, but the
firmware does not load correctly. This results in the Bluetooth stack
failing to initialize with the following critical error:

Bluetooth: hci0: Failed to read codec capabilities (-22)

The official Linux firmware repository does not contain firmware files for
this device (such as rtl8852b_fw.bin, rtl8852b_config.bin, or equivalent
for the 13d3:3612 module).
Because of this, Bluetooth cannot function on Linux systems.
RequestPlease provide the correct Bluetooth firmware binaries for this
device,

OR submit the appropriate firmware to the official *linux-firmware*
repository.

I am happy to test any firmware you provide and share detailed logs.

The diagnostics summary is attached below for your reference.

Thank you for your assistance,
*Shreyash Chaurasia*

Diagnostic Summary:

1. lsusb
Bus 001 Device 005: ID 13d3:3612 IMC Networks Bluetooth Radio
iManufacturer: Realtek
iProduct: Bluetooth Radio

2. dmesg errors
Bluetooth: hci0: Failed to read codec capabilities (-22)
usbcore: registered new interface driver btusb
HCI device detected but firmware fails to initialize

3. Kernel version
Linux 6.17.11-x64v2-xanmod1 (also failed on stock Kali kernel 6.11)

4. Firmware folder contents

/lib/firmware/rtl_bt/ contains many Realtek files (rtl8723, rtl8821, rtl8852cu, rtl8852bu, etc.)
but no firmware for rtl8852b / rtl8852be / rtl8852ce.

5. Bluetooth state
bluetoothctl scan on → SetDiscoveryFilter failed: org.bluez.Error.NotReady