How in the world do I set the presets on this after market "Koolertron" head unit. One of the previous owners installed it, so i'm lost and the internet seems to know nothing when I google Koolertron. I'm guessing its some no name chinese company.



It was locked into the calibration screen when I took the pic. I had to cycle the battery to get it out of that screen.

Here is a picture form the ebay with the screens it has. I've seen these units running diffrent OS's. I have no clue what this one is running.



I asked my friend who works at the dealer if he had any ideas and he said "Have fun with your Chinese radio." Does anyone know how these work?

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