XPS 8700 Windows 8.1 Dell BT/WIFI issues

XPS 8700, Windows 8.1 Pro.  Problem developed where system was taking a long time to shutdown or reboot.  Troubleshooting led me to this thread:

http://answers.microsoft.com/en-us/windows/forum/windows8_1-performance/windows-81-pro-x64-uefi-very-slow-boot-and/0296a252-bc00-4e6a-a645-112f187e6714

and based on what I read I tried uninstalling the BT and WiFi devices from device manager and then uninstalling the BT/WiFi driver suite from Programs and Features in Control Panel.

This corrected the long shutdown and reboot problem on my system.  The Dell Qualcomm Atheros BT/WiFi Driver Suite was the issue.  On reboot the BT & WiFi devices were reinstalled by Win 8.1 using generic drivers but the long shutdown and reboot problem has NOT reappeared.

This lead me to problem #2.  I visited the Dell Drivers and Downloads site for the XPS 8700 and looked for an updated driver for Win 8.1 for the BT/ WiFi device.  There is no driver listed for Windows 8.1 for this device.  For Windows 8 the download that was suggested was this file:  

Hard-Drive-DW1703_Win84_A00_Setup-M8R50_ZPE.exe

but this file does not install under windows 8.1.  The error message effectively says 'wrong operating system".

So it looks like as of this moment the Dell combo BT/WiFi device is broken under Win 8.1.  When will Dell offer a correct driver for this OS?

Edit 12/26 - looks like Dell has changed the links as now there is an older file listed under Win 8.1 for this device.  I also edited some of the above for gramer and speling erors.

Note - If you try to uninstall the software from Programs and Features, the uninstall may hang.  If so, kill off the uninstall process using Task Manager and reboot.   When restarted, uninstall the BT and Dell WiFi devices from Device Manager and then try the uninstall of the software again from Programs and Features.  It should work properly this time. 

After reboot, you may see the BT and Wi-Fi devices have reappeared in Device Manager as Win 8.1 will reinstall them using more generic or older drivers.  On my system this seemed to be OK as the slow shutdown/reboot problem has not reappeared.

Hopefully Dell and Qualcomm will get this sorted out quickly and give us a driver that works properly under Win 8.1