Note: When you click the links below to download the firmware, it indicates that you have already read and agreed to the Open source licenses.

How to upgrade the M11S：Click here

FiiO USB DAC driver: Click here

Updated at 2023-05-17

M11S FW1.0.3 firmware download: Click here

The following changes and improvements have been made the FW1.0.3 compared to the FW1.0.2 on M11S:

1. Added a new function of iPhone decoding under USB DAC mode (After enabling the iOS devices decoding function on the menu of Settings - USB DAC, the M11S can be connected to an iPhone/iPad, etc. This function should be disabled when connecting to a non-iOS device);

2. Optimized text misses when switching songs of different sampling rates;

3. Optimized the speed of downloading apps in the FiiO application store;

4. Fixed the issue where some MQA tracks failed to be fully unfolded in Tidal;

5. Fixed the issue where files in the micro SD card may stutter;

6. Fixed the issue where the playback would fail in the Audible app;

7. Fixed the issue where the M11S failed to connect to some hidden WiFi; 

8. Miscellaneous performance improvements and bug fixes.

Updated at 2022-12-28

M11S FW1.0.2 firmware download: Click here

The following changes and improvements have been made the FW1.0.2 compared to the FW1.0.1 on M11S:

1. Added ROON Ready function (on desktop screen or click the FiiO Roon in the drop-down menu to use);

2. Added second harmonic regulation function (can be set in the Settings - Audio - Second harmonic regulation);

3. Added experimental functions (PEQ, DLNA transmission);

4. Added support for DTS format;

5. Added desktop icon shortcuts for FiiO Music (multimedia service, local music, playlists, continue);

6. Fix the display error of sampling rate on the status bar when playing music using third-party apps.);

7. Fixed display problem of some MQA tracks;

8. The tracks in the DLNA album directory are changed to be sorted by track numbers;

9. Miscellaneous improvements in performance.