[HELP] Dell XPS 8700 Motherboard - 0KWVT8

Hi I am trying to change UUID and Serial of Mainboard as well as the Service Tag.
I am unsuccessful in doing this as I have tried using DMIEditor and it doesnt stick after pc restart. I have even tried using flash rom file and editing values in HxD and still does not stick. Is there anyway I can change these values for my motherboard(0KWVT8)

I have AMI bios btw.