After installing the latest audio driver, close Device Manager and restart your computer to ensure that the updates are installed properly. My bluetooth chipset information is Broadcom USB 20702A3.You should now see a list of Realtek HD audio drivers to download.

Or Is there a way to download the bluetooth drivers alone from apple site. Or can I create the '$WinPEDriver$' folder manually, just as BootCamp Assitant creates it.

I live in a place where bandwidth is very low, so downloading another 2 GB of drivers will take 3 more days, and may also get interrupted frequently. Is there a way were I can download the '$WinPEDriver$' folder alone from Apple site. I tried to install the Bluetooth driver alone manually, that also didn't help. With this the driver installation does proceed, but everything except the Broadcom_Bluetooth_Driver are getting installed. So I created a empty folder named '$WinPEDriver$'. When I try to manually start the setup.exe in BootCamp folder, it quits saying '$WinPEDriver$' folder is missing. Without '$WinPEDriver$' folder, Windows10 get installed without the drivers. Now I wish to reinstall it, but when I took a backup of the bootcamp drivers, I only backed up the 'BootCamp' folder, I forgot to backup the '$WinPEDriver$' folder. Then due to space issues I deleted the Windows partition, thinking I can always reinstall it, if needed. I was able to use it to install Windows10 and use it. I also downloaded the bootcamp drivers, and a folder named 'BootCamp' and '$WinPEDriver$' were created in my Windows10 bootable usb. I have an macbook air 2012, I recently installed Windows 10 in it using bootcamp.

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