KA15 online update tool: https://fiiocontrol.fiio.com/ 

How to update the firmware for KA15: Click here

Updated at 2025-10-08

KA15 V1.1.2 firmware firmware changes are as follows:

1. Added 3 new UI themes, such as VU meter and dynamic spectrum.

2.Optimized the factory reset function to restore customized EQ parameters to factory defaults.

3. Other system optimizations.

KA15 V1.1.2 firmware download link and update instruction：Click here

Updated at 2025-08-01

KA15 V1.0.5 firmware firmware changes are as follows:

1. Added DRE control switch.

2. Other system optimizations.

Note: DRE refers to Dynamic Range Enhancement technology. When enabled, it enhances the audio's dynamic range; when disabled, it helps reduce distortion or coloration.

KA15 V1.0.5 firmware download link and update instruction：Click here

Updated at 2025-05-08

KA15 V1.0.4 firmware firmware changes are as follows:

1. Modified the time to enter sleep mode after stopping playback to 3 minutes, so as to avoid the POP sound caused by entering sleep mode when the playback was paused for a short time.

KA15 V1.0.4 firmware download link and update instruction：Click here

Updated at 2024-12-19

KA15 V1.0.3 firmware firmware changes are as follows:

1. Added the function of renaming and sharing the self-defied PEQ in the web version of FIIO Control.

2. Fixed the issue where PEQ renaming could not be saved in English mode.

3. Miscellaneous performance improvements and bug fixes.

KA15 V1.0.3 firmware download link and update instruction：Click here

Updated at 2024-10-24

KA15 V1.0.2 firmware firmware changes are as follows:

1. Added the function that the language selection page will instantly pop up after performing a factory data reset.

2. Added new Theme 5, a digital dashboard style with power consumption display.

3. Added support for OTA firmware upgrade via the FIIO Control app on the mobile phone.

KA15 V1.0.2 firmware download link and update instruction：Click here