Check for an available tuner
Press the red color button or the Options button (depending on your remote type below) to view the TV Activity screen. If no tuners show "Available," then you will need to make a tuner available.
For a tuner currently "Recording," select the tuner and choose "Stop Recording."
For a tuner currently "Watching," power off the receiver in the listed location.
Once a tuner is available, the Guide will download automatically (this may take ten minutes).