No, when you press and hold the EXIT button again to return to the HD mode all your previously checked HD resolution settings should return automatically.allenn said:I have the composite video from my HR24-100 connected to an RF converter which connects via coax to my SD TV. I have the new HD-UI, and I got the new message on my SD TV, and I pushed the Exit button until it switched to 480p as suggested. After watching the SD TV, I turned it off and went to watch my HD TV. It was on 480p and the remote Format button only had 480p. I went to the HD Settings and only the 480p was checked. I had to re-check all the formats. Is this what you have to do every time you watch on an SD TV or is there a shortcut to restoring the formats?