No matter what I do, I can't get my Explorer 8300 box to hold the 1080i setting. I have gone through several setup procedures, checked both the 480i and 1080i settings, and whenever I turn off the tv the box reverts to 480i. I'm using an HDMI cable from the box to a Sony Bravia LCD HD tv. My friend has had the same problem with 2 boxes of the 3 in his house. He now has 2 boxes that will hold the 1080i setting. Scientific America blames Adelphia's firmware. I am in the Cleveland Ohio market and would greatly appreciate any insights you may have.