My girlfriend has a blackberry curve 8520 about a month old. When she activated it for the internet she put it on her PC about 3 days later and told to update to software v.5.0. So when I put my blackberry on the computer it says it is on software v.4.6 and no update available. How do I get my blackberry curve 8520 on software V.50 and why won’t it offer the update? Please help!