This device is known by the following names: Qualcomm Atheros Valkyrie BootROM, Atheros Valkyrie BootROM

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Driver version:
Version: 8.0.0000.0202 (recommended)
Date: 10.07.2012
Type of device: Bluetooth device
Manufacturer: Qualcomm Atheros
Operating systems: Windows 7 x64
Inf-file: athdfu.inf
Section: Atheros.NTAMD64
Download the driver
Download free drivers for USB\VID_0CF3&PID_FFFF
Versions of the operating system: Windows XP, 7, 8, 8.1, 10 (x64, x86)
Section: Bluetooth devices
Subsection: Qualcomm Atheros Bluetooth devices