Hello Joe Dohn,
I have the final conclusion.
I began transferring music without listening from the extrenal hdd. 400 files transferred. After transfer was finished i started to listening music. After 2 albums the issue appeared. The behavior was..... before the track was come to the end and the next track to be loaded seconds before ending the same loop appeared and the track palyed from the begging. With the player on and with safety i disconnected the external hdd and the power of the disk went down and i reconnected the disk and waiting for the player to do the usual staff of mounting and etc.
The issue was there even after disconnecting-reconnecting the external hdd or even transferring without lisrening to the disk and from the disk.
Only restart of the player makes this issue go away.
Conclusion: After transferring music there is something going on with the player's high usage resources
and the os of the player doesn't do a refreshing to stop the high usage.
That's why my conclusion is the firmware's bug. That was not an issue on previous versions.
Waiting for you thoughts.
