preloaded system

My first and new BCD396xt scanner should be arriving today in the mail. From what I understand the scanner comes preloaded. From reading (and watching) reviews online I can understand that one might want to reset the scanner and delete the preloaded content. I think one does this by turning on...

I am trying to get the preloaded Pittsburgh system on my scanner and uniden says "To turn a preloaded system on or off, press SCAN, then press ./no then the two-digit System Quick Key." I have tried that and it does nothing. I do have preprogrammed counties in my scanner as well and am...