How to upgrade the firmware for K15: Click here

Updated at 2026-9-16

Main controller firmware V155 download link: Click here

MCU firmware V95 download link: Click here

The following changes and improvements have been made to the new firmware:

1. Added NAS server support for local playback mode.

2. Added QPlay support for streaming mode.

3. Added a menu in system settings to customize the FN1/FN2/FN3 buttons on the remote control.

4. In local playback mode, added secondary sorting by "Album" within the "Artist" and "Genre" categories (please update the music library after firmware update).

5. Updated decoder library, fixed issues where CUE files failed to split tracks, OGG format was unsupported, and PNG/BMP cover art failed to display.

6. Added "Disable LO" in system settings.

7. Fixed an issue where the album art would not refresh when skipping tracks during AirPlay casting.

8. Fixed an issue where noise occurred when EQ was enabled while streaming MQA tracks via Roon.

9. In addition to local playback mode, other working modes can now also display the app playback homepage (requires updating the FIIO Control app).

10. Other performance optimizations and bug fixes.

Note: After upgrading the SOC firmware to V155, please be sure to download and upgrade the MCU firmware to V95 from the official website.

1.本地播放模式，新增NAS服务器访问功能

2.流媒体模式，新增QPlay投播支持

3.系统设置，新增遥控器FN1/FN2/FN3按键自定义功能

4.本地播放模式下，“艺术家”和“风格”分类中的歌曲支持按“专辑”进一步归类（更新固件后请重新更新歌曲库）

5.更新解码库，修复CUE文件无法分轨、OGG格式不支持的问题，修复PNG和BMP格式封面不能显示的问题

6.系统设置，新增“禁用LO”功能选项

7.修复AirPlay投播时，切曲出现显示封面不刷新问题

8.修复使用Roon投播MQA曲目并开启EQ时，音频输出出现杂音的问题

9.除本地播放模式外，其他工作模式也可以进入APP播放主页显示（需更新FiiO Control APP）

10.其他Bug修复

注：升级主控固件到V155版本后，请务必前往飞傲官网，下载并升级单片机固件到V95版本

Updated at 2025-11-21

Main controller firmware V142 download link: Click here

MCU firmware V93 download link: Click here

The following changes and improvements have been made to the new firmware:

1. Added a working mode switching feature in the FiiO Control app (requires updating to the latest app version)

2. Added five new UI themes.

3. Fixed the issue where the Smart Power-Saving feature might occasionally fail.

4. Fixed the issue where the web PEQ page could not retrieve modified PEQ names (requires updating the MCU firmware to V93)

5. Fixed the issue where enabling EQ via the app in coaxial and Bluetooth decoding modes could cause audio stuttering.

6. Fixed the issue where the Roon client displayed an incorrect output in Roon mode.

7. Fixed the issue where connections to certain 5G WiFi may fail.

8. Fixed the issue where connections to WiFi hotspots with names containing “+” or “'” may fail.

9. Fixed the issue where the knob indicator light might occasionally show an incorrect on/off status.

10. Miscellaneous bug fixes.

1.新增FiiO Control APP工作模式切换功能

（需更新最新版本APP）

2.新增5套主题UI

3.修复概率出现智能省电功能无效问题

4.修复网页端不能正常获取修改过的PEQ名字问题

5.修复部分同轴和蓝牙解码模式下，使用APP打开EQ会出现声音卡顿问题

6.修复Roon模式下，Roon客户端显示输出方式不正确问题

7.修复部分5G WiFi连接失败问题

8.修复WiFi热点名称带带+或'符号导致连接失败问题

9.修复旋钮指示灯有时候亮/灭状态不对问题

10.其他Bug优化