Asus G751JT NVMe Insertion

[Gords]

I followed the below guide for inserting an NVMe module into my BIOS so that it could boot an SSD i picked up cheaply, the modding seemed to go ok without any errors or warning messages but im not having much luck flashing the file. Firstly it was moaning because it wasnt a new bios so i had to use the /nodate switch on winflash but now its saying 'bios file is not valid"

Could someone please tell me how to override the error and more importantly is the error normal because the bios has been edited?
Ive attached the bios files in case anyone wanted a root around.

Many thanks.

http://www.win-raid.com/t871f16-Guide-Ho...-BIOS.html