I've receive again a new Z10, updated to the latest firmware v2.2.56, also the HT2 2.1.9, and everything is working perfectly. No blank screens nor audio cuts, whatever the video files are 4K (10 bits 4:4:4) or 1080p. I've tested all the movies that I've had previous problems. The Home Theater 2.0 is automatically updating and all files were recognized without issues (only the usual movie's files such as "it (2017)" or some others with similar file names). The system appears to be quite stable. I usually don't use BD menus (I've tested a few blu-rays 1080p and it worked better and a bit faster than the X10). I use MakeMKV to convert a movie into a simple file with only one audio track with an external "srt" file for the subtitles. Great job Zidoo that you've made in giving care and attention to the users claims and suggestions. Let's hope you keep improving your products (still is no possible do delete a movie file in the HT2.0). The Z10 is faster and smother that the X10, the PQ is very similar, but the sound and channel separation in my Atmos 7.1.4 receiver is much better in the Z10.