I purchased a kvt-815 dvd in-dash stereo from my friend and the security code activated and my friend forgot the code so do u guys have some tips. I already tried: "Type 1 During the code request mode, while holding the DISP key depressed, press and hold the Volume UP or DOWN key for 3 seconds (so that "..." disappears). Then using your remote enter your code.
Type 2 Press the "Auto" button and "Track up" on face of radio at the same time. The four dash lines ( . . . . ) should "disappear".
Then using your remote enter your code.
Type 3 Model# DPX-4020 and DPX-4030 Press and hold the 1 then the 6 preset key (preset keys are the buttons on face of radio for storing you "favorite" radio stations). "C" should display. Then using your remote, enter your code. "