URC6810, URC6820: How can I choose the right source/input in my TV with the Zapper remote?

If you set up the TV and the STB with basic codes, the AV button will allow you to access the menu for sources (if available on your TV). You can now use the arrow keys to navigate through the menu on your TV. If you do not press a key for 10 seconds, the arrow keys will control your STB device again.

You can disable/re-enable this feature as follows:

1. Hold down the TV Power and STB Power keys until the light blinks once and then twice.
2. Press the AV key once, the LED will blink 4 times (2 times for re-enable.)