Since 30 August 2022, the playback problem of the M11 plus (song playback with interruptions) is now known (Forum: "FiiO app problems on M11 Plus - song delay"). Many other users of the forum have posted further topics on this problem. To date, FiiO support has not been able to find a working solution to this problem.

It took 4 months until the support offered an alleged solution to the problem with a firmware update. At the same time, the FiiO Music App was "improved" to version 3.1.5. Both "improvements" offered no solution. The problem still exists.

With the update of the FiiO Music App, a new problem was even created in the Android version. An update of the older music app on my Android device resulted in the app no longer working at all. And a complete reinstallation did not work either.

Although a corrected Android version (3.1.6) was delivered 2 weeks later, the actual problem on the M11 plus was "naturally" not solved by the new version M3.1.6.

My conclusion: FiiO support has completely failed to fix the problem! In the future I will buy my Highres player from another manufacturer! FiiO is "dead" for me as a brand!