: Go to "Programs and Features" and uninstall "CSR Harmony Wireless Software Stack" if present. Clean the Device : Open Device Manager (press Win + X ). CSR8510 A10 or "Unknown Device" under Bluetooth.
⚠️ Please do not use automated "driver updater" tools. Many of these utilities, such as "Bit Driver Updater" and similar, are known to cause more system issues than they resolve. Their "free scans" often flag perfectly healthy drivers and aggressively push paid subscriptions. Always prefer a manual, community-verified solution for obscure hardware like this.
Because this is an older, generic component, the driver is typically distributed via OEM catalog archives or driver repositories.
Connecting wireless headphones, gamepads, mice, keyboards, and smartphones 📥 How to Download the BM05EV2 01 Bluetooth Driver (2021)
The official Intel website
Updating your BM05EV2 01 Bluetooth driver to the stable 2021 release is the most effective way to eliminate pairing failures and audio drops. Always prioritize sourcing your drivers through Microsoft's official update catalog or your PC manufacturer's support site to keep your operating system secure.
Click , select the folder where you extracted the files, and click Next .
Download the latest .exe Bluetooth driver package from Intel.
Go to the tab and select Hardware Ids from the dropdown menu. bm05ev2 01 bluetooth driver 2021
Realtek does not host public consumer drivers, but Microsoft Update Catalog does.
: Listed as "Generic Bluetooth Adapter" or "Unknown Device" with Code 28.
Locate your adapter (it may be named Generic Bluetooth Radio , CSR8510 , or have a yellow exclamation mark). Right-click the device and select .
If your device is from Lenovo, Dell, HP, ASUS, etc.: : Go to "Programs and Features" and uninstall
While you might be searching for a 2021 version, using the newest available driver (e.g., 2026 releases) offers several benefits: Fixes potential vulnerabilities.
Look for values matching USB\VID_0A5C&PID_21E8 (Broadcom) or similar vendor strings. Step 2: Download the 2021 Driver Package
Based on technical feedback and common user experiences with this hardware class in 2021: