This belongs in the rear projection forum. You may have enabled some features that physically exist on your display but are not factory enabled. Mits sold a variety of very simillar if not the same displays with different models names and prices depending on features enabled. If you go to the rear projection thread you and look at the topics relevant to your model year I am sure you get some discussion. I have a 2009 82" and a 2011 92" which we flagship models with all available features. I post over there from time to time.
Hacking firmware gets brought up occasionally but most are afraid to try it. My interest in calibration with outboard video proecessors. I also use an HTPC so I use one HDMI port and don't even use the Mits remote... a couple of year ago I was very conversant on each variant now I have lot tocuh with that. Much of that processing stuff is pure crap anyway. I don't even use the Sharpness on my Radiance.
I do however have a Darbee Darblet which does wonderful things to improve the sense of depth and realism. Highly recommended. Most people could get a big improvement by using a lower stand. The 92" display need to be on an 8-10" stand. Almost no one including myself have their 92" on an appropriate stand. My stand is 15". I will get a 10" later this year. The Radiance with a 125 point color calibration and a Darbee make incredible improvements in image quality to what can be achieved with internal controls.
Samsung 78" JS8600, Mits WD-92840 43" Samsung 43ku7000 - Lumagen Radiance XS, Martin Logan Motion 40s, Ascend Sierra 2s
58" Panny Plasma -DVDO DUO, Usher S520, JBL HLS-610, Definitive SM45, MusicHall Marimba