Hello. Do you have a problem with playing the full BluRay.iso menu from your own CD images? When I open the "play BluRay menu" window, the main track is played instead of the disc menu. I can not change the song or soundtrack from this position. I am asking for advice if something can be done about it? I have a few days to return the equipment.
On my X9S audio track and subtitle selections works correctly both with or without using BD/UHD menu's.
Approx. On what firmware? You write about x9s and I have X20. Can you write what are the selected options in the menu, type of key settings, etc. I mean the main boards of the CD's MENU or from this position you can choose songs by name and music track?
For audio and concert type of BD's one must always select BD Menu as these use individual tracks rather than chapters. Next use this BD menu displayed to go to the desired tracks. How that looks will be different per recording/disc.