Alpine EZi-DAB Owner's Manual page 23

Autotune
Performs a scan for digital stations as per initial start-up.
FM pass-through
Choose from two FM pass-through connection options:
Disabled EZi-DAB output effectively replaces all FM stations when EZi-DAB is switched on. (Default)
Enabled EZi-DAB output is blended in to the FM waveband, alongside normal broadcast FM stations.
Software upgrade
Use this option to update EZi-DAB's software if you have an update available and loaded on a USB stick.
Factory reset
Use this option to reset all settings including the installer settings above to defaults.
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