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 update the BTR3K: Click here

Updated at 2020-11-20
BTR3K FW1.3:  Click here (Backup link: Click here)

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

1. Added setting button operation modes via app (now you can choose to skip tracks with the middle button of the in-line control; the recent version of FiiO Control app is required for using this function);

2. Added holding the volume buttons to continuously adjust volume (available when the button operation mode is NOT set to "Hold volume buttons to skip tracks");

3. Fixed the issue where the power-on prompt was not complete when using OMTP headphones;

4. Fixed the issue where the audio might be muted or distorted when the BTR3K was connected with two devices and both devices were playing or making calls at the same time;

5. Fixed the issue where the beginning of the playback sound might be missing when connected to the computer via Bluetooth;

6. Increased the volume adjustment range for phone calls (up to 0dB, adjusted via app);

7. Miscellaneous bug fixes;