Unable to build USB key for Win 8 models - Z90D8 and D90D8

Unable to build USB key for Win 8 models - Z90D8 and D90D8

Hi all,

I can't seem to build a USB "push" key for the Win 8 models - Z90D8 and D90D8. I'm using the USB firmware tool version 1.19.0.4 and everytime I select the RSP file, it gives me an error saying "invalid RSP file for the OS type selected.". I did select Windows 8 Embedded on the tool so I'm not sure what's going on. I did some research and apparently there is a USB Firmware tool version 1.2 that might work but I'm unable to find this anywhere around the site. Any tips or tricks around? 

Thanks,
Elmer