Firmware Patch (DFU) for Opera (HT6190) - Improve Headphone Suddenly no Sound Issue

Disclaimer: Please contact Avantree Support BEFORE upgrading. Be aware that if you upgrade without prior consultation with Avantree technical support and the product dead due to DFU misoperation, the warranty is not covered.

Step 1: Download the Device Firmware Upgrade (DFU) File

Download this DFU File: Opera_DfuToV1p19 and take note of where you save it - you'll need it later. If you can't download it directly, Right-click the link, then select 'open in new tab'.

Step 2: Enter Opera Transmitter into DFU mode

First, ensure that the transmitter is OFF, then use a USB data cable (Avantree USB cable with gray tip) to connect the transmitter to a Windows PC. To avoid permanent damage, please do not unplug the transmitter during the DFU procedure.

Then slide the power button to PAIR position for 10 seconds to enter the transmitter into “DFU mode.” A notification may pop-up on your Windows PC, notifying you that a new device has been connected via USB.               

Alternatively (if there's no pop-up) you can also confirm the device's DFU status by checking USB devices in your computer's Device Manager. The headphones will appear as - CSR BlueCore in DFU mode.

Now, follow the directions below to complete the DFU. 

For Windows, Download & Install CSR Bluesuite to Perform DFU

Step-by-Step Bluetooth Device Firmware Update (DFU) Guide with Windows PC

For macOS, please refer to this link:

Step-by-Step Device Firmware Update (DFU) Guide for macOS

Still need help? Please email us at support@avantree.com