Sky box issue since update
 

I have a Sky+HD box with no subscription which I purely use for
listening to the radio (DAB reception here is rubbish and satellite
offers a higher bitrate anyway). Since the last software update which
introduced the new EPG, whenever I turn on the box now it does not
instantly start producing audio. I have to enter the channel number
before it starts playing. Is there any way to fix this behaviour, or am
I going to have to live with it?