I'm trying to play a blue ray on my ps3, I've done it before perfectly fine. I just bought "The Expendables" on blue ray, when I try to play it it tells me to do a system update, so I do. When I do the update, right before it goes through it tells me the "Other OS" will not be able to be used? I don't understand what this means? What will happen if I click accept? Can someone tell me what the "Other OS" means or what it does? Is it okay if I click accept? What will happen if I do? What happens if I can't use the "Other OS?" Thanks a lot to who ever can answer all my questions!