Developer Hits Dead End Getting Barrot Bluetooth Adapter Working in macOS Ventura VM

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A developer has spent several days reverse-engineering a Bluetooth compatibility issue involving a Barrot Technology USB adapter running inside a VMware Workstation macOS Ventura virtual machine on Windows 11. The adapter uses USB vendor/product ID 0A12:0001, masquerading as a CSR8510 A10 device, but raw HCI commands reveal it is manufactured by Barrot Technology. While USB passthrough and initial HCI communication function correctly, macOS Ventura consistently fails to register the adapter as an active Bluetooth controller. Standard fixes including OpenCore and BlueToolFixup have not resolved the issue, leading the developer to suspect the problem lies within Apple's Bluetooth stack between AppleBluetoothUSBTransport and IOBluetoothHCIController. The developer is now seeking others experienced with macOS Bluetooth internals or Barrot controllers who may recognize the failure pattern or provide insight into any required special initialization sequence.

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