Optional Firmware Upgrade (DFU) for Aria 8090T (V_2.1)

Before conducting the DFU, please read the Avantree Product DFU General Troubleshooting Notes

Please note that after upgrading, the dual link feature with the cell phone may not function.

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: Device Firmware Upgrade (DFU) File
Please download the upgrade firmware file to your computer noting the saving path. Please note you can not open this file directly, just to save and choose when you upgrade.
File: AS90T-8090_DfuToV2p1  (Note that you need to unzip it)

Step 2: Enter Headphones into DFU Mode
Ensure the headphones are OFF, then use a USB data cable (Avantree USB cable with gray tip) to connect the headphones to a Windows PC. To avoid permanent damage, please do not unplug the headphones during the DFU procedure.

Then press both + and - for 7 seconds to enter the headphones into “DFU mode.” The LED indicator on the headphones will turn PINK. A notification may pop-up on your Windows PC, notifying you that a new device has been connected via USB.  On some PCs it might not pop up, but the headphone is in DFU mode already, you can try to proceed to the next step directly.

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.

Step 3: Download & Install CSR Bluesuite to Perform DFU
Please follow the steps in How to Conduct Firmware Update (DFU) (right-click then select 'open in new tab')

Step 4: For the Dongle

File: AS90T-8090_DfuToDongle  

To enter the DFU mode: Plug the dongle into USB port and not connecting to any headphones, press&hold the MFB for 12 seconds until the light dims out. Do the Step 3 part again for the Dongle.

Step 5: Reconnect and Lock Dongle and Headphones. 

1. Turn headphones back on. Will enter pairing mode automatically after DFU. (LED on headphones will flash red and blue alternately)

2. Put the DG80 into Pairing Mode by pressing and holding the MFB until the Blue LED starts to flash rapidly.

Wait for a few seconds for them to connect with each other. 

3. Double click the MFB on the dongle to LOCK the dongle and headphones. LED will flash BLUE 5 times quickly on the dongle, indicating that the devices are locked.

Please feel free to contact support@avantree.com with any further questions about this product or the above DFU procedure.