how to use Generic Bluetooth Adapter download host controller's firmware

troy zhu 21 Reputation points

I need to develop USB windows driver for my bluetooth host controller like the following ( has no supported drivers).

Windows Generic Adapter driver
USB 2.0 interface
USB bluetooth controller(HCI be compatible with windows driver)

windows generic adapter driver(with bthusb.sys) should be used, but it has no firmware download function.  
From windows document: "a vendor-provided INF file is not necessary for Windows 7 because any USB device that has a USB\Class_E0&SubClass_01&Prot_01 hardware ID will install as a Generic Bluetooth Adapter in Windows 7."  

how can I add the download firmware function? thank you

Windows Hardware Performance
Windows Hardware Performance
Windows: A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.Hardware Performance: Delivering / providing hardware or hardware systems or adjusting / adapting hardware or hardware systems.
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