HP Designjet 815mfp

I have a client who moved their plotter from one plant to another plant. But before it was moved their IT department formatted the hard drive on the scanner. Of course they do not have the original systems disks anymore. I was able to get the plotter up and running, but as for the scanner it is currently a boat anchor. Does anyone know were I could get the ISO files and/or original oem disks to allow me to reload the image for the scanner.....

HP Designjet 815mfp
Q1278A

Thanks in Advance for your support.