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 FiiO UTWS3: Click here (Backup link: Click here)

Note: The upgrade can only be operated for one earhook at a time.
Please take the two modules out of the charging case and make sure the module that is ready for the upgrade is turned on while the other is turned off (please hold its multifunction button until a 'Power off' prompt is heard).

Updated at 2021-04-21
UTWS3 V0.2.53 firmware download: Click here

The following changes and improvements have been made in the new firmware:
1. Improved the issue where there was sound imbalance occurred to some mobile phones between the left and right earhooks when making a phone call. 
2. Improved the function of memorizing the volume. 
3. Improved the speed of long pressing to switch tracks.
4. Improved the system stability.

Updated at 2021-01-14
UTWS3 V0.2.46 firmware download: Click here

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

1.Changed the volume setting scheme: remove the scheme of compulsively setting the mobile phone volume to max for each connection;
2.Miscellaneous bug fixes.

Note: If you prefer the previous firmware, you could revert it in the same way.

UTWS3 V0.2.45 firmware download: Click here