D50 III version V1.39 firmware update

1. Precaution

This firmware is intended for use with D50 III only and is not compatible with other models. Flashing this firmware onto a different model may render the product inoperable and irreparable. If your firmware version is already V1.39, there is no need for this upgrade.

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2. How to check the firmware version

When the unit is in standby mode, press the “<”, “>” and “Mute” buttons on the remote control that is in Bluetooth mode in sequence.

*The picture is only for reference.

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3. How to update the firmware

For users of D50 III with firmware versions below V1.31, before upgrading to the V1.39, it is essential to first update to V1.31 (the V1.39 upgrade package already includes this firmware). Upgrading directly to V1.39 may result in UAC1.0 failing to start.

Details of the firmware upgrade procedure, please refer to readme.txt in the firmware zip package.

*The picture is only for reference.

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4. Download

Windows: Download here (This update requires a Windows 10 or higher OS with driver installed. Drivers could be downloaded here).

MAC：Download here

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5. Problems may be encountered

If the computer does not recognize the unit, try entering DFU mode by pressing and holding the power button on the front panel, and then reflash the firmware. If this does not work, try using another USB port, another USB cable or even another computer.

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6. What's updated

Fix some known issues. See the Changelog inside the firmware zip for details.

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If you have any questions about upgrading, please contact us before updating this firmware.