Guide to the BM05EV2 01 Bluetooth Driver (2021 Update) The BM05EV2 01 is a common hardware identifier for certain USB Bluetooth adapters and internal modules, often built on Realtek chipsets like the RTL8761B. Ensuring you have the correct 2021 driver is essential for maintaining stable connections between your PC and wireless peripherals like headphones, mice, and keyboards. Specifications and Compatibility
The BM05EV2 01 hardware typically supports Bluetooth 5.0 or 5.1 standards, offering features like:
Dual Mode Support: Operates both Bluetooth Low Energy (BLE) and Classic Bluetooth simultaneously.
Enhanced Data Rate (EDR): Provides faster data transfer rates up to 2 Mbps.
OS Support: Compatible with Windows 10 and Windows 11, as well as legacy versions like Windows 7 and 8.1. How to Download and Install the 2021 Driver
While Windows often installs a generic driver automatically, for full functionality, you should use the manufacturer-specific package.
Сбой сопряжения или отсутствие ответа от Bluetooth - MSI
The "BM05EV2 01" refers to a specific Bluetooth module hardware ID (often associated with Broadcom or similar chipset manufacturers) frequently found in laptops and USB dongles from the early-to-mid 2010s. By 2021, these devices became legacy hardware, making official driver support harder to find for modern operating systems like Windows 10 and 11. bm05ev2 01 bluetooth driver 2021
Below is a drafted article focusing on identifying, installing, and troubleshooting this specific Bluetooth driver.
How to Download and Install the BM05EV2 01 Bluetooth Driver (2021 Update)
If you are seeing "BM05EV2 01" in your Device Manager with a yellow exclamation mark, it means your computer recognizes the Bluetooth hardware but lacks the necessary software to communicate with it. While this is an older chipset, you can still get it working on modern systems with the right steps. 1. Identify the Manufacturer The "BM05EV2 01" ID is most commonly associated with
Bluetooth adapters. Many manufacturers like Dell, HP, and Lenovo used these modules in their older laptop models. 2. Best Methods to Update the Driver
Since official standalone "BM05EV2 01" installers are rare, use these methods in order: Windows Update (Recommended): Windows 10 and 11 have a massive library of legacy drivers. Settings > Update & Security > Windows Update View optional updates Look under Driver updates
for anything mentioning "Broadcom" or "Bluetooth" and install it. Device Manager Manual Search: Right-click the button and select Device Manager BM05EV2 01 (usually under "Other devices" or "Bluetooth"). Right-click it and select Update driver Search automatically for drivers Manufacturer Support Pages:
If you are using a laptop, visit the official support site (e.g., Dell Support HP Support Guide to the BM05EV2 01 Bluetooth Driver (2021
) and enter your serial number or model. Look for "Broadcom Bluetooth Driver" downloads from the 2015–2018 era, as these are often compatible with the 2021 version of Windows 10. 3. Troubleshooting Connection Issues
If the driver installs but won't connect to devices, check the following: Compatibility:
Bluetooth 4.0/4.1 adapters (like this one) are generally backward compatible, but may struggle with some high-bandwidth Bluetooth 5.0 features. Unpair and Reset:
If you are upgrading from an older driver version, Intel and other manufacturers recommend unpairing all existing devices before the update to avoid "phantom" connections. Physical Switch:
Ensure your laptop's physical Wi-Fi/Bluetooth switch (if it has one) is turned on. 4. Direct Driver ID Search
If the above fails, you can find the specific "Hardware ID" to search for a precise driver: Device Manager , right-click the device and select Properties Hardware Ids from the dropdown. Copy the string (e.g., USB\VID_0A5C&PID_21E8 ) and search for it on Microsoft's Update Catalog for the most secure download. Need a specific driver link? Please provide your laptop model Hardware ID
found in the steps above so I can find the exact file for you. Fix Bluetooth disappeared in Windows - Microsoft Support Note: The exact string “bm05ev2 01” is not
Note: The exact string “bm05ev2 01” is not a standard published driver name from Microsoft, Intel, or Realtek’s official mainline. It is most likely a OEM-specific hardware ID or a firmware label seen in Device Manager under “Hardware Ids” (e.g.,
USB\VID_0BDA&PID_8771orUSB\VID_13D3&PID_3526). The guide below uses common Realtek Bluetooth 5.0 chips from that era.
Symptom: After installation, the Bluetooth toggle in Action Center is missing, and Device Manager shows an error 43 (device stopped responding).
2021 Fix: Disable fast startup.
From user reports on forums (DriverPack, Device Hunt), the bm05ev2 01 often uses the Realtek Bluetooth 4.0 / 4.2 adapter with driver version 1.7.1017.3003 (2021) or 1.8.1032.3009.
Suggested driver file names (from 2021):
btfilter.sysRT Bluetooth Driver (v1.8.1032.3009).exebtwampfl.sys (Broadcom variant)The BM05EV2 01 is a compact, low-energy Bluetooth 4.0 (or sometimes 5.0, depending on the OEM variant) USB dongle widely distributed in the early 2020s. Often included with budget desktop PCs, aftermarket Wi-Fi cards, or sold as a standalone nano-adapter, this device became popular for adding Bluetooth functionality to older laptops and desktops running Windows 7, 8, and 10.
However, by 2021, many users upgrading to Windows 10 (21H1/H2) or Windows 11 encountered significant driver issues. The manufacturer’s included CD often contained outdated 2015-era drivers, leading to connection drops, code 10 errors, or the device failing to appear in Device Manager.
This article provides a definitive guide to finding, installing, and troubleshooting the BM05EV2 01 Bluetooth Driver for 2021 operating systems.