That camera is dead end.

That camera is dead end. Either use tape or get a new camera. You can’t take the firewire out of the camera directly into a drive. Won’t ever work. The option is to buy an external recorder and none of the new ones use firewire or analogue so you would have to convert first with another box. Now you two boxes and 2 cables and 2 more batteries and you are recording a crappy image from an old camera.