The firmware update sometimes fails for various reasons and the Mionix Naos 7000 will not respond. This can be resolved by running the firmware update after the mouse is set in to bootloader mode.
To set the mouse in to bootloader mode, please do the following:
1: Hold down the right mouse button, left mouse button and the scrollwheel button at the same time.
2: While you are holding the buttons, plug the mouse in to your USB port.
3: The logo LED and the scroll wheel LED of the mouse should now be blinking.
4: Then run the firmware update software that can be found in your mionix installation folder.
If this is not working, please try to update it on a different computer.