alvarez,
I had that same issue after I got my HTL-HD. The consensus over at AVS was to just unplug it because the upgrade is not going to take. I assume that you got a pop up asking if you wanted to upgrade, and you of course, said yes. Then it goes into that timer deal at the bottom and the receiver fails to respond to anything, correct?
I followed everyone else and unplugged it. It was later brought up that the best way to receive the upgrade was to:
1. Make sure you are tuned to a D* channel and not an OTA channel and
2. Make sure that your unit is powered off.
I did this and it upgraded that night (around 4am EST)
Hope that helps..