Samsung WA86C User Manual page 62

 For sound quality settings, provide in the Input Source Switch menu window.
1.2 Wi-Fi setting
The Wi-Fi setting menu is activated when the Wi-Fi module (included
separately) is connected to the slot at the bottom of the product
1.3 F/W Update
The system firmware can be upgraded through [Settings]→[System]→
[System Update] menu.
To add new features and stabilize products, we recommend continuous Firmware

updates.
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