I used the cd method to hack an Audi box & ran into a couple of problems with my original DMS and the new hard drive.
I Repartition/reformat the original DMS (fast, no block check) using the hack cd then reinstalled the firmware using PMM off the cd that came with my Audi phatnoise to get the original DMS working I then followed the instructions given in
"Re: VW/AUDI 20gb DMS hack... Help" by genesis
to the letter I now have 80gb Toshiba working perfectly.
It seems as long as you don’t scribble over the drive signature in the first place (follow the instructions & you shouldn’t) you can reparation/reformat using the hack cd then reinstall firmware using pmm from the VW/Audi phatnoise cd & you get your DMS back to standard Audi / VW spec.
As far as the box itself the hack cd worked fine on that
So from my point of view thanks to everyone here and give the cd a go