Bm05ev2 01 Bluetooth Driver 2021 Guide

Prior to 2021, the BM05EV2 01 typically used a generic Realtek or Cambridge Silicon Radio (CSR) chipset. However, mandatory Windows updates in early 2021 (specifically the 2021-03 Cumulative Update for Windows 10) broke compatibility with unsigned legacy drivers.

Key changes in 2021 that affected this dongle:

Consequently, 2021 became the year users had to hunt for specific signed drivers—often from alternative sources like Realtek’s official repository or modified inf files. bm05ev2 01 bluetooth driver 2021

Since you specified “2021”, you likely want a stable driver from that year – not the latest (which may cause issues on older OS like Windows 8.1/10 early builds).

For those dual-booting or using older Macs, the BM05EV2 01 requires different handling. Prior to 2021, the BM05EV2 01 typically used

For the CSR 8510 chipset, Microsoft’s inbox driver from 2021 (version 10.0.19041.1) often fails. The working 2021 solution is:

CSR Harmony 4.0.0.1100 (modified inf for Win10/11) Consequently, 2021 became the year users had to

Installation via “Have Disk” method (works 100% in 2021):