The unit includes a dedicated iPod terminal. According to official sources, for a successful Bluetooth audio connection with an iPod touch or iPhone, you need to initiate the pairing from the iPod itself: go to iPod → Settings → General → Bluetooth, select “Strada” from the list of discovered devices, and confirm the connection on the navigation screen.
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If your unit supports English, you can attempt to switch the interface language using these steps: The unit includes a dedicated iPod terminal