BB Software :: Unable To Update To OS 6?

I am having difficulties with updating to OS 6. When attempting an update I am told that I need an active Blackberry subscription. I wish to know how to become an active subscriber. I once before had OS 6 on my device but now I cannot get back onto OS 6. The device also lacks some applications upon installing of the OS such as the games are missing or BlackBerry Maps, those that come as default.As well it says my device is apparently associated with an email that uses a Blackberry Enterprise Server even though it isn't, and I cannot add my own email.