To switch to the update mode, with 3D Sound ONE product, please, follow the instructions below :
Plug the USB cable to your computer
While pushing on the power button, plug the micro-USB cable to tracker on the 3D Sound One. Keep pressing the power button during 2 seconds.
The light will briefly turn steady blue then turn steady purple.
(NB: it can also turn green instead of purple if your headphones are running an older firmware
Click on “Menu and select “Headset“
Click on “Rescue“
Wait for the two updates, then click on “OK“.
The LED is blinking Blue, your headset is now updated with the latest firmwares. You can enjoy 3D Audio with the 3D Sound One !