Unfortunately both dumps are invalid. It seems that your drive is a second generation drive and neither tool is able to correctly dump the firmware. DosFlash should be able to do it, although running DosFlash on a laptop is likely not a viable proposition.
Here’s a copy of the latest KPxx firmware that I have: DS-8A8SH_KP5B.zip (823.8 KB)
It is quite a bit newer compared to KP55.
In case anyone needs it, here’s a fresh link for the KU54 (look two posts back for more details): DS-8A8SH_KU54.zip (823.6 KB)