Software Update

[7EAH5pmw]

I have a Sony TV.  I think it is a Bravia.  I am using Sky.  A black box has appeared on my screen, bottom right.

There is text: A new software update is available for your TV.  Use your TV remote control to select "Show Details".

There is a white box below saying:  

Show Details

but I can't find a way to click on this box.

[daveyh64]

Access Software Update via the Settings or Set Up option and then Customer Support.