Have you tried hitting the default key, Menu 1570 and press Default key and exit out to Encrypted channel, it may take a few goes, also you can try rebooting the box and even changing the channel, if you have the latest firmware on it will update, it is a recurring problem, lazy updating and does need a kickstart now and then.
Are you in Ireland ? I had the same problem. In the end I turned the box off at the back, left it for a while, turned it back on and it eventually updated. Took ages though.