How to update the firmware of JM21: Click here

Updated at 2025-06-05

JM21 FW1.0.7 firmware changes are as follows:

1. Added remote control functionality (Note: When using screen control, avoid running multiple apps simultaneously, as it may cause low memory issues).

2. Added Cassette Mode (Accessible via the Cassette Mode icon on the desktop/dropdown menu).

3. Added adjustable output volume for system USB (Enabled by default, go to Settings > Audio to adjust it).

4. Added "Use cover image in the same folder" option (When enabled, if a song has no embedded cover, the first image in the same folder will be used as the cover. Go to Settings in FiiO Music to enable or disable it).

5. Fixed occasional charging failure issues.

6. Fixed the issue where audio may be abnormal in Bluetooth transmitting and receiving.

7. Fixed the issue where desktop folders could not be renamed.

8. Fixed the issue where the play/pause button lock function would fail after sleep mode.

9. Fixed the issue where songs on certain NAS servers using WebDAV protocol would fail to play.

10. Improved some UI display effects.

11. Miscellaneous performance improvements and bug fixes.

1.新增远程控制功能

（注:使用同屏控制时，避免同时开多个应用，可能会导致低内存）

2.新增磁带模式

（可从桌面磁带模式图标/下拉菜单进入）

3.新增系统USB输出音量可调功能

（可前往设置-音频选项下设置，默认开启）

4.新增同文件夹任意名称封面选项

（开启后，当歌曲无封面时，将使用同文件夹下第一张图片作为歌曲封面，可前往飞傲音乐设置下选择开启或关闭）

5.修复概率性无法充电问题

6.修复蓝牙发射/接收几率性出现声音异常问题

7.修复桌面文件夹无法重命名问题

8.修复休眠后播放/暂停键锁定失效的问题

9.修复部分NAS服务器WebDAV协议下歌曲无法播放问题

10.优化部分UI显示效果

11.其他性能优化及Bug修复

JM21 FW1.0.7 firmware download link

Full firmware package: 

jm21pack.fiio.net/beta/JM21-update-1.0.7.zip

Incremental firmware package:

jm21pack.fiio.net/1.0.6/JM21-ota-1.0.7.zip

Updated at 2025-04-21

JM21 FW1.0.6 firmware changes are as follows:

1. Added system PEQ (Parametric Equalizer) feature

2. Added ALL TO DSD feature

3. Added MQA decoding support

4. Added DoP support for USB DAC

5. Added iPhone decoding support in USB DAC mode

6. Added new WiFi sleep mode strategy to optimize standby power consumption

7. Fixed occasional automatic reboot issue when shutting down with OTG cable connected

8. Miscellaneous performance improvements and bug fixes

Notes:

1. Before connecting an iPhone for decoding, enable the “iOS Device Decoding” switch in the USB DAC settings.

2. The new version adds the “Keep WLAN connection during sleep” option on the WiFi list page. When disabled (default), WiFi will automatically turn off during system sleep and reconnect upon wakeup, significantly reducing power consumption. Enabling this option maintains a WiFi connection during sleep with moderately higher power usage.

1.新增系统PEQ功能

2.新增ALL TO DSD功能

3.新增MQA解码支持

4.新增USB DAC解码DOP支持

5.新增USB DAC模式支持iPhone解码

6.新增WiFi休眠关闭策略，优化待机耗电

7.修复连接OTG线关机机器几率性出现自动重启问题

8.其他性能优化及Bug修复

注1：连接iPhone解码前，需在USB DAC设置下开启“iOS设备解码”开关

注2：新版本在WiFi列表界面新增“在休眠状态下保持WLAN连接”选项。该选项在默认关闭状态时，WiFi在系统休眠时将会自动关闭，并在系统唤醒时自动打开回连，可有效降低系统休眠时的耗电；您也可以开启该选项，在休眠状态下保持WiFi连接，此时休眠休眠耗电较关闭状态下偏大一些

JM21 FW1.0.6 firmware download link

Full firmware package: Click here

Incremental firmware package: Click here

Updated at 2025-01-20

JM21 FW1.0.5 firmware changes are as follows:

1. Added a new function of Double tap to wakeup (enabled in Settings-Global).Kindly note: Enabling this function may slightly increase system power consumption. Please enable it according to your needs.

2. Miscellaneous performance improvements and bug fixes.

1. 新增双击唤醒功能（可前往设置-通用下开启双击唤醒功能）请注意：开启双击唤醒功能后，系统耗电将会略微增加，请根据需求开启使用。

2. 其他性能优化和Bug修复

JM21 FW1.0.5 firmware download link

Full firmware package: Click here

Incremental firmware package: Click here

Updated at 2025-01-09

JM21 FW1.0.4 firmware changes are as follows:

1. Added the feature of removing third-party app desktop icons.

2. Fixed the issue where local playback may pause automatically.

3. Fixed the issue where playback may crash in Pure Music mode.

4. Optimized memory management strategy to improve the smoothness of foreground applications.

5. Miscellaneous performance improvements and bug fixes.

1.新增第三方应用桌面图标移除功能

2.修复本机播放几率性自动暂停问题

3.修复纯音模式几率性闪退问题

4.优化内存管理策略，提升前台应用流畅度

5.其他性能优化及Bug修复

JM21 FW1.0.4 firmware download link

Full firmware package: Click here

Updated at 2024-12-31

JM21 FW1.0.3 firmware changes are as follows:

1. Added a key lock setting feature (go to Settings > Global > Key-lock Settings to select which keys to lock when the screen is off).  

2. Added shutdown charging function.

3. Optimized compatibility of USB Audio output.  

4. Optimized stability of Bluetooth decoding mode.  

5. Fixed the issue where there might be no output in USB DAC mode.  

6. Fixed the issue where it failed to connect to hotspots of certain mobile phones.

7. Fixed the issue where the “disable charging” function would not take effect after a reboot.

8. Miscellaneous performance improvements and bug fixes.

1.新增锁键设置功能（可前往设置-通用-锁键设置下选择熄屏下需要锁定的按键）

2.新增关机充电功能

3.优化USB Audio输出兼容性

4.优化蓝牙解码模式稳定性

5.修复USB DAC模式几率性无输出问题

6.修复无法连接部分手机热点问题

7.修复禁止充电重启后不生效问题

8.其他性能优化及Bug修复

JM21 FW1.0.3 firmware download link

Full firmware package: Click here

Incremental firmware package: Click here

Updated at 2024-11-18

JM21 FW1.0.2 firmware changes are as follows:

1. Fixed the issue where noises may occur in USB output in third-party apps.

2. Fixed the issue where volume adjustment was unavailable in USB output in third-party apps.  

3. Fixed the issue where noises may occur when playing DSD over Bluetooth mode.

4. Fixed the issue where the indicator light would automatically turn on after being turned off.

5. Fixed the issue where the indicator light showed red even when fully charged.  

6. Added the function of automatic pause after 2 minutes of playback when no headphones are inserted.  

7. Improved compatibility of EXFAT cards.  

8. Miscellaneous performance improvements and bug fixes.

JM21 FW1.0.2 firmware download link

Full firmware package: Click here