So using Sovem's mod... and a bit of faffing around to get to boot the damned thing to DOS!! I am, for the first time in 1 year now using WiFi =D
For other folks looking for the same thing...
Sovem's BIOS With NO WHITELIST is here -
https://app.box.com/s/jxc4pbc4slkohi711e4l
I used Rufus Boot utility to create a bootable DOS USB Stick -
http://rufus.akeo.ie/
Copy the Bios files provided to the Root (so not in a directory)
Shut down my Z585 and pressed the little button to the right of the power button (with a bent arrow on it)
Go into Bios settings and change the boot options to Legacy - NOT UEFI
Set boot order to USB stick first
Save and Exit
Laptop now runs straight from USB stick.
type "flash.bat" and enter... and that's it... the flashing utility will do it's thing and restart.
Change WiFi card (two screws) and restart... and here we are now =D
Sovem - you are a life saver, thank you =)