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.

Updated at 2025-02-28

Q15 xmos v2.25 firmware download link and update instruction: Click here

Q15 Bluetooth v1.1 firmware download link: Click here

How to update the Bluetooth firmware for Q15: Click here

The following changes and improvements have been made to the  XMOS firmware V2.25：

1. Add support for PEQ in coaxial decoding;

2. Optimize the control issue of fiio control;

3. Optimize the problem of too low output volume in EQ mode.

The following changes and improvements have been made to the Bluetooth firmware V1.1:

1.Optimize the issue where some mobile phones fail to connect to Bluetooth.

Q15 xmos v2.01 firmware content:

1. Added the EQ display on the UAC page;

2. Added the prompt for XMOS firmware upgrade;

3. Added the version number display on the menu bar;

4. Fixed the issue where the volume turned down after enabling EQ;

5. Optimized the gain display logic;

6. Modified the logic of pop-up window in desktop mode.

Q15 xmos v2.01 firmware download link and update instruction: Click here

Q15 xmos v1.82 firmware content:

1. Added custom PEQ (Parametric Equalizer) function in USB decoding mode;

2. Added switch option for MQA mode;

3. Fixed the issue of excessive power consumption when connecting Samsung

    phones in PHONE MODE;

4. Optimized the logic for selecting EQ between the Q15 and Fiio Control App;

5. Miscellaneous performance improvements.

Q15 xmos v1.82 firmware download link and update instruction: Click here

Q15 xmos v1.66 firmware content:

1. Optimize standby and shutdown power consumption and correct the problem of high

    shutdown current with low probability.

2. Optimize the stability of Bluetooth connection and correct the problem of slow button

    response during Bluetooth decoding.

3. Optimize the charging logic and correct the problem of not entering charging or

    automatically restarting in a small probability.

Q15 xmos v1.66 firmware download link and update instruction: Click here

Q15 xmos v1.59 firmware content:

1. Improve the problem that Bluetooth playback and pause playback may

    automatically reset

2. Improve the problem of automatic reset during charging process

3. Improve the compatibility issues of some brands of adapters during the charging

    process

4. Improve the problem that the indicator light becomes dim when adjusting the

    brightness in Fiio Control App

5. Improve the problem that Fiio Control App cannot be connected without plugging

    in USB in non-Bluetooth mode

6. Other performance optimizations

Q15 xmos v1.59 firmware download link and update instruction: Click here