From the change log, I see that these issues may still remain unsolved:
A. Bookmarking/History
Mede8er 800X3D bookmarks don't work properly. Partially watched movies lose their bookmark status regularly and quickly (after watching just a few other titles), and brand new, never before watched movies frequently start with the "Continue?" question. I used DVico players previously (XRoid A1, TVix) and they had (a) a very reliable automatic bookmarking system, (b) a manual "set bookmark" system in addition (that would not get overwritten by the automatic one), and (c) a very long "History" list in which you could see what movies you were watching last (very helpful if you need to switch between many movies frequently, e.g. when you have a small kid that keeps interrupting your viewing). As far as my experience with the recent firmware goes (I'm using the 800X3D for about 3 months now), all this is not possible at the moment.
B. Movie Start Silence/Blackout
Every movie starts with 5 to 8 seconds of black screen and silence (e.g. each "Family Guy" episode starts from "...is violence in movies" in the opening tune). This makes it very inconvenient for short films (e.g. a directory with 3 minute songs for kids), causes long gaps between episodes and there are indeed movies where having the first 5 seconds is important. Again with the TViX I had before (even the very old models I used in 2007), this never occurred. If the player needs to load/buffer the film first before putting out image and sound, it should then still start at 00:00:00 with both picture and sound active.
C. Automatic Advance of Position in the Movie List
Once more time something the TViX did well: Watching a long list of short films (kids' songs, YouTube shorts or TV episodes) one would start at the top entry and then binge watch for hours. Let's say this list had 52 episodes and I stop after watching 27 episodes. With the Mede8er, I return to the title list with the top entry still selected. With TViX, it would now select the episode that I was just watching (27), so I could remember to continue from episode 28 or wherever I stopped. Mede8er requires me to call the INFO overlay first, check the episode name, and then stop. Not convenient. So, please forward the selection focus to the episode that was running when I stopped. This is also related to the missing "History" function.
D. Movie List Display Fonts
Less important, but on a 47'' and over TV at 1080p, I could read much smaller fonts. This would make scrolling through long title lists a lot more comfortable. Having an option to reduce or enlarge the font size would be really useful for me here.
E. File Deletion
This is nitpicking, but I find that there is too much user interaction required to delete files. It's (1) select, (2) confirm deletion request, and (3) confirm that the files have been deleted. I don't find (3) is necessary.
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In order of relevance, it's "B-A-C" (for me). Can this be fixed in a future firmware update?