How I can convert or decompile .dfu to .hex?

[Drovosek01]

Hello.
Please tell me how I can decompile the file .dfu to file .hex?
I have system unit Dell Vostro 3267 which has a network module DW1707. Module DW1707 integrated Wi fi and bluetooth QCA9565.
I installed hackintosh on this computer, but in this bluetooth module the firmware is loaded only by drivers, when Windows starts. In order for the firmware in the bluetooth module to load when you start macOS, you need to take the firmware in the format .hex.
I downloaded the official drivers for my bluetooth module, but there are firmware files only in the format .dfu.
Here is the link to the drivers:
https://yadi.sk/d/cYGax0NEdoCF3w
https://www.dell.com/support/home/us/en/19/drivers/driversdetails?driverid=g66t8&oscode=wt64a&productcode=vostro-3267-desktop&lwp=rt
Please help me convert or decompile .dfu to .hex.
Thanks.