The network audio system "WS-A70" equips automatic firmware update function by the implemented Google feature.
The firmware update is automatically performed when the latest firmware is available on the Internet, after the unit is turned on with the main power switch on the back panel.
The latest firmware is found during the music play back or idling, however, the firmware update will not be performed until you turn the unit on again with the main power switch.

During the update, update process will be displayed on the display at the top of the unit, and all operations can not be performed until the firmware update is completed. (The update will take approximately 5 minutes) Also, please do not turn the unit off until the firmware update is completed.