Tried to upgrade mine yesterday it took a while but said that there were no upgrades available. That suits me after hearing that we would probably loose ITV 3 and 4 I will not be trying again and will leave it the way it is. Maybe they should have told us that this was liable to happen.A bit of a shambles I think.
It wasn't an upgrade but a full retune that was required - quote from the freeview site "Because of the nature of the changes it is important to perform a full retune which will delete the existing channel line up and other settings from your box. Please check the instructions for your equipment."
No probs retuning but now ITV 3 picture freezes whilst sound carries on. Never liked Channel 5 or wanted to watch it so disappointed that a channel that I watched regularly is now useless in exchange for one I didn't watch in the first place !!