The guys from John Lewis have just been to deliver the replacement PX11. Took the old one away which was firmware version 5.13. Got the new one out of the box and the first thing I checked was the firmware version. I have version 5.20 ! I thought the newest was 5.18. They are really pumping out the firmware upgrades aren't they ?! Just need to get it back up on the wall now and I will be a happy bunny ! Top marks to John Lewis, fantastic customer service ! No questions asked replacement. It was within the 28 days no quibble guarantee but still, they made it very easy !