My G4 box not got the update yet, tried to manually download but no luck..
Interesting - It would appear that the update has done some interesting things to my BT Box.
I can no longer access the BT player
I've lost a number of channels including BT Sports, Kids Channels, Music Channels and others such as Uniiversal, Fox, etc.
Recordings on some of the above mentioned channels are not working - guess that is related.
A reboot hasn't worked, so I guess it will be a re-tune and then a factory reset.
Broadband connection appears to be fine, so not sure what else it could be.