The sys.txt doesn't really tell you that you got it here via Brown Dog, but that's irrelevant. Ok, so now we have two possibilities:
1. The DIN was original, so that makes it likely Honda Connect and Garmin Street Pilot
2. The DIN was installed by the person that sold you the car and it's running whatever he's put on it, so that makes it android (according what's on the SD card)
So now you have to find out if the .apk was installed and how to launch it from radio.
To be sure why don't you ask original owner if he installed the DIN or was it part of Honda CRV?