using System.Management; var searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PnPEntity WHERE Name LIKE '%CSR%' AND ClassGuid='e0cbf06c-cd8b-4647-bb8a-263b43f0f974'"); foreach (ManagementObject device in searcher.Get())
Use hciconfig , lsusb , btmon :
foreach ($device in $csrDevices) Write-Host "`nFound: $($device.FriendlyName)" -ForegroundColor Green Write-Host "Status: $($device.Status)" -ForegroundColor Yellow csr 4.0 bluetooth driver
# Check if Bluetooth 4.0 LE is supported $leSupport = Get-PnpDeviceProperty -InstanceId $device.InstanceId -KeyName "83DA6326-97A6-4088-9453-A1923F573B29 6" -ErrorAction SilentlyContinue if ($leSupport.Data -eq $true) Write-Host "Bluetooth 4.0 LE Support: Yes" -ForegroundColor Green else Write-Host "Bluetooth 4.0 LE Support: Not detected" -ForegroundColor Red using System
lsusb | grep -i "Cambridge Silicon Radio" hciconfig -a | grep -A 5 "CSR" Integrate with Windows Update API or fetch from CSR’s generic driver package (often included in Windows 10/11 inbox drivers). 📌 Common Issues with CSR 4.0 Drivers | Issue | Possible Fix | |-------|----------------| | Code 43 (Device stopped) | Reinstall driver, disable power saving for USB root hub | | Bluetooth not showing | Check USB connection, try different port | | LE devices not pairing | Update to generic CSR Harmony driver | | Driver date very old | Force update via Device Manager → Browse → Let me pick → Generic Bluetooth Adapter | csr 4.0 bluetooth driver