How long does it take to update software?

[loofer]

Hi, there's a transmission next weekend to update the software on my IDTV but i'm not sure how long i have to leave it on to complete the upgrade, can anyone help me out?

[rjlawson]

I think the Sony ones take about an hour, best to just leave the TV on BBC MUX & check the s/w numbers every hour? Used to be about 5-20minutes in the old ONdigital days when you forced an update.