I bought a onix 10 for a boat that the sell fell thru on. My new boat is loaded with good equipment. This unit was sold as a chart/sonar unit new. I spoke with Humminbird earlier today and confirmed With hbird update it will run Down image with addition of DI transducer xnt 14 di t.. It will do Side and Down with new si transducer and Humminbird Black box.
If true how much is the Black Box..?