It just says in the top left corner "System Update".
then, "Downloading update data"
"Don't turn off the system"
"After downloading the system will restart"
Have tried pressing the circle and nothing happens.
Don't turn it off by the back switch. It will kill it. It's serious. Try holding down the power button.
Thank you Gamerwillz. Held down the power button and after 5 secs it switched off. Turning it back on, it went into Insatlling mode and did such. It then updated the data base and now I have 2.52 installed.
Don't know what happened to cause the system to pause, but it now works.
Thank you to all who contributed to my problem - it is very much appreciated by a 57 year old, old man.