KY-BT100 Bluetooth Adapter Driver 8.1.4222.0
by Toshiba
This release in brief
- The only release of this driver in the catalog, published in June 2014.
- All 169 hardware IDs it lists are also covered by other drivers in the catalog - each hardware ID page lists them.
What you are downloading
This file comes straight from Microsoft's own download server - the same one Windows Update uses. We do not host it, repack it or change it in any way - the download button takes you to the manufacturer's server, not to a file of ours.
- Package
- 20680038_f0db770412e60b611c430e292ba780740a257943.cab, 78 KB
- Published by
- TOSHIBA
- Digitally signed
- Windows checks this signature before installing
- Inside
- 4 files - the driver itself, its setup instructions, a digital signature file and supporting libraries
Show the full listHide the list
- TosBtCi.dll40 KB
- tosrfusb.cat23 KB
- tosrfusb.inf35 KB
- tosrfusb.sys77 KB
Nothing happens on its own: you download the file and decide yourself whether to install it.
- Manufacturer
- Toshiba
- Device
- KY-BT100 Bluetooth Adapter (Integrated System Solution Corp.)
- Driver version
8.1.4222.0- Release date
- June 22, 2014
- Supported Windows
- Windows 8.1, Windows 8
- Architecture
- 32-bit (x86)
- File size
- 78 KB
- File name
20680038_f0db770412e60b611c430e292ba780740a257943.cab- Digital signature
- Signed - catalog
tosrfusb.cat - INF version
06/22/2014,8.1.4222.0- INF provider
- TOSHIBA
- Device class
- BLUETOOTH
- Source
- Microsoft Update Catalog
- Last verified
- July 8, 2026
- SHA-256
1b1b0784c1be37af3141730e5c9386b38e6904171e065046722475720c37ed75
Supported devices (1)
- KY-BT100 Bluetooth Adapter (Integrated System Solution Corp.)
Supported hardware IDs (169)
- AR3012 Bluetooth 4.0USB\VID_0CF3&PID_3004
- USB\VID_0930&PID_021F
- USB\VID_0930&PID_021E
- USB\VID_0930&PID_0225
- USB\VID_0930&PID_0226
- USB\VID_0930&PID_0229
- Atheros AR3012 Bluetooth 4.0 AdapterUSB\VID_13D3&PID_3362
- USB\VID_0930&PID_0215
- USB\VID_0930&PID_0219
- Atheros AR3012 BluetoothUSB\VID_0930&PID_021C
- USB\VID_0930&PID_0220
- USB\VID_0930&PID_0227
- USB\VID_0930&PID_0228
- USB\VID_0930&PID_022A
- USB\VID_0930&PID_021D
- RTL8723A BluetoothUSB\VID_0BDA&PID_8723
- USB\VID_0930&PID_0222
- Broadcom BCM2035USB\VID_03F0&PID_011D
- Intel(R) Wireless Bluetooth(R)USB\VID_8087&PID_0A2A
- Bluetooth AdapterUSB\VID_413C&PID_8501
- BCM2035 Bluetooth dongleUSB\VID_0A5C&PID_200A
- Bluetooth DongleUSB\VID_0B7A&PID_07D0
- BT Mini-Receiver (HCI mode)USB\VID_046D&PID_C709
- Bluetooth DongleUSB\VID_03F0&PID_0624
- BCM2035 BluetoothUSB\VID_0A5C&PID_2009
- Bluetooth DeviceUSB\VID_050D&PID_0083
- MS-6970 BToes Bluetooth adapterUSB\VID_0DB0&PID_6970
- USB\VID_4851&PID_1103
- Bluetooth DeviceUSB\VID_04AD&PID_2501
- Bluetooth DongleUSB\VID_0DB0&PID_697A
- BT EDR DongleUSB\VID_0930&PID_0509
- Bluetooth DongleUSB\VID_0DB0&PID_1967
- Bluetooth Dongle (HCI mode)USB\VID_0A12&PID_0001
- BCM2035 BluetoothUSB\VID_0A5C&PID_2035
- Bluetooth DeviceUSB\VID_055D&PID_0BB1
- BTM200B BlueTooth AdapterUSB\VID_1668&PID_0500
- Bluetooth wireless hubUSB\VID_046D&PID_C708
- Bluetooth DeviceUSB\VID_044E&PID_2014
- Bluetooth wireless hubUSB\VID_046D&PID_C707
- Bluetooth AdapterUSB\VID_04BF&PID_0320
- UGTZ4 BluetoothUSB\VID_044E&PID_3001
- Bluetooth AdapterUSB\VID_04BF&PID_0319
- IBM Integrated BluetoothUSB\VID_04BF&PID_0318
- Bluetooth DeviceUSB\VID_0451&PID_FFFF
- Bluetooth UltraPort Module from IBMUSB\VID_04BF&PID_0317
- Integrated BluetoothUSB\VID_04BF&PID_0310
- Bluetooth DeviceUSB\VID_0451&PID_1234
- IBM Bluetooth Ultraport ModuleUSB\VID_04BF&PID_030A
- Bluetooth USB dongleUSB\VID_04BF&PID_0309
- Bluetooth DeviceUSB\VID_049F&PID_0086
- + 119 more
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
Before you start: create a restore point (Start → type "Create a restore point" → Create). It takes a minute and lets you undo everything if the new driver turns out worse than the old one. This driver is made for Windows 8.1, Windows 8 (32-bit) - if your Windows is different, look for another version further down the page.
This driver comes as a .cab file. Double-clicking it will not install anything - Windows only shows you what is inside. Install it through Device Manager instead:
- Right-click the downloaded file → Extract All → choose a folder you will not lose (the Desktop is fine) → Extract.
- Hold the Windows key and press X, then open Device Manager.
- Find the device that is not working - it usually has a yellow triangle, or sits under "Other devices" with a name like "Network controller".
- Right-click it → Update driver→ "Browse my computer for drivers".
- Click Browse, choose the folder you extracted into, tick Include subfolders, then Next.
- Windows finds the driver in that folder and installs it. Restart the computer afterwards.
If Windows answers "The best drivers for your device are already installed" - that does not mean your driver is fine, only that Windows prefers its own version. In the same window choose "Let me pick from a list of available drivers" → "Have Disk" → Browse → point to the file ending in .inf inside the extracted folder → OK.
Check it worked: open Device Manager again. The device should no longer show a warning icon, and its driver version should match the one on this page.
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 that button is greyed out, use the restore point you made before installing (Start → "Recovery" → Open System Restore).