Look at this article
here.
It's in Russian but you can view the translation in Chrome and see the detailed screenshots and settings of the image I posted - it's the same as in this article. Moreover I think the hardware is pretty much the same as yours.
And I'm pretty sure that this image works - tested on more than 10 of Dragons. No sure where you see these messages but its IP address is 192.168.1.113 (HTTP access).
You said that this rig was for spare parts - it might have a some kind of hardware problem (control board, RPi or something else broken).
What type of dragon's where they tested on? I believe there is two main variant's based on how many chips on each blade. It is not one size fit all like it once was.