Realtek Semiconductor Corp. - Bluetooth - 18.4021.2502.1201 Driver 18.4021.2502.1201
by RealtekWindows 1164-bitSHA-256 verified
- Manufacturer
- Realtek
- Device
- Realtek Semiconductor Corp. - Bluetooth - 18.4021.2502.1201
- Driver version
18.4021.2502.1201- Release date
- February 25, 2025
- Supported Windows
- Windows 11
- Architecture
- 64-bit (x64)
- File size
- 230 KB
- File name
4b1be4cf-9efb-486f-8f54-9e111ea0a986_fe0ef121fb1d549879bc43ace86f8f7c715c6b9d.cab- Digital signature
- Signed - catalog
RtkBtfilter.cat - INF version
02/25/2025,18.4021.2502.1201- INF provider
- Realtek Semiconductor Corp.
- Device class
- Bluetooth
- Source
- Microsoft Update Catalog
- Last verified
- July 8, 2026
- SHA-256
3502520b190843461f4786fea807517c60223a6be24976885f054097b897dbc4
Supported hardware IDs (16)
- USB\VID_13D3&PID_3572
- USB\VID_0BDA&PID_B85B
- USB\VID_04CA&PID_4B06
- USB\VID_0BDA&PID_885B
- USB\VID_0BDA&PID_887B
- USB\VID_0BDA&PID_B052
- USB\VID_0BDA&PID_B152
- USB\VID_0BDA&PID_B252
- USB\VID_13D3&PID_3571
- USB\VID_04C5&PID_1670
- USB\VID_13D3&PID_3570
- USB\VID_0BDA&PID_886B
- USB\VID_13D3&PID_3591
- USB\VID_13D3&PID_3611
- USB\VID_0489&PID_E125
- USB\VID_0489&PID_E123
Compare with your device: Device Manager → right-click the device → Properties → Details → Hardware Ids. If one of the values above matches, this driver supports your hardware.
How to install
- Create a restore point(Start → "Create a restore point" → Create), so you can roll back if anything goes wrong.
- Verify compatibility: your Windows version (Windows 11) and architecture (x64)must match this driver, and your device's Hardware ID should appear in the list above.
- Download the file using the button - it comes directly from Microsoft Update Catalog.
- Optionally verify the checksum: open PowerShell, run
Get-FileHash your-download.cab -Algorithm SHA256and compare with the SHA-256 above. - Extract the .cab archive: right-click → Extract All, or run
expand -F:* file.cab C:\driver\in Command Prompt. - Install via Device Manager: right-click your device → Update driver → Browse my computer → point to the extracted folder. Alternatively run
pnputil /add-driver C:\driver\*.inf /install. - Check Device Manager: the device should show no warning icons, and the driver version should match.
How to roll back
If the device stops working after the update: Device Manager → right-click the device → Properties → Driver tab → Roll Back Driver. If the button is greyed out, use the restore point from step 1 (Start → "Recovery" → Open System Restore).