In order to make the "new" firmware working you have to reset the recorder. While on press the STOP button on the recorder (not on the remote) and the on/off button together. Unplug also the power cord for 1 minute.

You will loose all the setting and timer (not the data on the HDD) and you'll have to go through the whole initial setup. In this way all the channel scanned will remain. Unfortunately you will have to do the same procedure anytime you want to make a full scan of the channels.