Tried to gather what are/could be firmware issues from the above posts...
Firmware issues with the AP80 delivered so far (FW1.0):
1. When using Hiby Link feature of the HibyMusic Android app, the album art doesn't show up.
2. The system sometimes crashes and then it restarts (once a day).
3. Typos (like: Vorbis is spelled as "VOROIS").
4. No scrolling when the info is too long to show.
5. LDAC implementation still missing.
6. Bluetooth pairing issues (need to repeat the pairing 3 times).
7. DSD64 playback issue (noise, hiss/static).
8. Streaming audio to the AP80 from a smartphone: default is SBC, even if the smartphone supports AptX/LDAC. No override even if Developer Options are open.
9. Pedometer can be very unreliable (one step counted as 5).
10. Podcasts/audiobooks support still missing.
11. 'Resume' not resuming as expected (need to press 'play' again to resume playback).
12. FM issue (no reception in some cases with earphones on; fine with standard receiver).
Feel free to add/remove/comment if necessary
Did not add the obvious troubles some had with their player (falling knob, moving parts inside the player...).
Holy f...