Ok, here goes! I downloaded the updated bird, and ran it in FS9, for which it was originally written, I think, from this site. the guages, other than the basic flight instruments failed to function, as you say, and it wouldn't fly worth a darn. Lotsa smokin holes...
To make it work at all, I had to change the aircraft.cfg by adding in the entire Helicopter and engine sections from my (slightly!

) modified UH-60 from Hovercontrol. I can post them if you want...I then had to DL and install the panel upgrade from Flightsim. Having done that, I found all the guages blank. No indications, or even needles at all, 2d or 3d cockpits. Turned out their XML guage folder was empty, so I copied all the guages from the original aircraft's xml folder into it, and LO! All the guages, except the fuel guage, now work as advertized.
I also found that to get it up, so to speak, the fuel control levers need to be in DIR and the power levers in FLY. it does seem to matter. You also must reset ever possible breaker on all 3 breaker panesl, 2 between the seats even with the pilots, in the VC cockpit, and one on the overhead panel. I apologise for improer names here....if the breaker will actualte, and not all will, Lclick it once to push it in, once again to let it pop out to operational postion. I am guessing out=on here...there are a bunch too.
After all this, it fly very politely and nicely, altho it is, as the POH specifies, a lady, and must be handled
delicately! 
Esspecially during transition to and from the hover and IN the hover even more so.
Your realism should be set to HARD, and your controller sensitivities should be set to 99% sensitivity, NOT 100%! with 0 null zones, unless your joystick requires them due to loose springs, age etc. I will work on an HTRv1.5 config for it if you like and will also work on getting the AFCS and fuel guages functional. They included a picture of the AFCS, but no AFCS. Their "AFCS" is just a copy of HC075DI_AFCP_UPDATE.zip available on Hovercontrol, flightsim, and avsim, possibly here too, altho I ran out of time to verify...
Ok, time to take the lovely wife out to lunch, I don't know if any of this is at all useful, but I tried...
Pat☺