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 firmware for K17: Click here

Main controller firmware upgrade video instruction: https://youtu.be/anhViDWo4Ws 

MCU firmware upgrade video instruction: https://youtu.be/WN-fyWZ53fQ 

Updated at 2025-04-12

Main controller firmware V193 download link: Click here

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

1. Achieved Roon Ready certification

2. Fixed the issue where data corruption may occur to USB drives after K17 rebooting

3. Fixed the issue where playback may auto-stop after long-term use of USB drives

4. Fixed the issue where FiiO Link failed to search for the K17 after reboot in streaming mode

5. Fixed the issue of synchronization error between "My Favorites" and the local library in the FiiO Link APP

6. Miscellaneous UI optimizations and bug fixes

1.通过Roon Ready认证

2.修复个别U盘在关机重启后会出现数据损坏问题

3.修复长时间使用U盘播放后，小概率出现播放自动停止问题

4.修复流媒体模式下，关机重启后FiiO Link搜索不到K17问题

5.修复FiiO Link APP上，我的最爱与本机同步刷新异常问题

6.其他UI调整与bug修复

Updated at 2025-04-01

Main controller firmware V183 download link: Click here

MCU firmware V87 download link: Click here

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

1. Added Link control in FiiO Control APP (Mobile phone and K17 can be controlled via APP for playback and EQ adjustment when connected to the same WiFi network).

2. Added OTA online upgrade function for SoC (will take effect in subsequent firmware versions).

3. Fixed the rare bricking issue during USB drive upgrades.

4. Fixed MCU firmware upgrade abnormality of MAC system (will take effect in subsequent firmware versions).

5. Miscellaneous bug fixes.

1.新增FiiO Control APP Link操控功能

（手机与K17连接同个WiFi后可通过APP操控播放和EQ调节）

2.新增主控OTA在线升级功能（后续版本固件生效）

3.修复U盘升级小概率出现变砖问题

4.修复MAC系统单片机固件升级异常的问题（后续版本固件生效）

5.其他bug修复

Updated at 2025-02-27

Main controller firmware V146 download link: Click here

MCU firmware V80 download link: Click here

The following changes and improvements have been made to the main controller firmware V146 and MCU firmware V80: 

1. Added new functions: Update song, Album/Artist/Genre/All songs category.

(You can view in the mode selection interface)

2. Added the cover display function in local playback mode;

3. Added 'Follow audio' option for knob indicator light.

(You can set from Settings-RGB Lights-Light color)

4. Added 'Press the volume knob' setting option.

(You can switch between 'Turn off screen/turn on screen' and 'Mute/Unmute' from'Setting-Ohters-Press the volume knob'.)

5. Added CMIIT ID display;

(In the second page from Settings - About K17)

6. Added new theme 2;

7. Optimized the popping and stuttering sound issues when cutting DSD tracks in local playback mode.

8. Optimized the U disk upgrade function

9. Optimized the Bluetooth reconnection function

10. Adjusted the song title display in my favorite from filename to title name.

11. Fixed the issue where the special characters & ^ can't be entered for wifi passwords.

12. Removed the time display in the status bar.

13.Miscellaneous UI display performance improvements and bug fixes.

1.新增功能：更新歌曲库、专辑分类、艺术家分类、风格分类、全部歌曲分类

在模式选择界面可查看

2.新增本地播放模式下显示封面功能

3.新增旋钮指示灯的“跟随音频”设置选项

在“设置-旋钮指示灯-颜色”下可以选择设置；

4.新增“短按音量旋钮”设置项，可选择“熄屏/唤醒”和“静音/取消静音”

在“设置-其他设置”下可看到此设置项

5.新增CMIIT ID显示

在“设置-本机信息”界面下第2页中显示

6.新增主题2

7.优化本地播放DSD切曲冲击声

8.优化U盘升级功能

9.优化蓝牙回连功能

10.修改我的最爱歌曲显示由原来的文件名改为歌曲名

11.修改wifi输入密码时无法输入& ^ 这两个特殊字符

12.取消状态栏时间显示

13.其他UI显示优化和bug修复