Think DS went to bosch 2004 /05 ?
The hybrid 6/14 R was a stable bit of kit, I have some old kit on the shelf but don't think we have any maintained any more
The Euro thing was briefly sold as ADE, Bosch, Castle & Pyronix I'd guess cheaper than developing your own kit
It been many yrs since I touched one...
Think the fobs are on the system as a zone, delete it.
The radio stuff was documented its own manual,
You'd be best of with co. with expirance of the product or rip the whole thing out & replace