Nothing fishy at all. The OS in the link is from Vodafone, but is the full release Blackberry OS. As mentioned above, follow the instructions exactly, and you'll be fine. I upgraded last week, and all is fine. Video recorder works like a champ, reinstalled the older BBMaps app, which works like a charm, etc. It'll take an hour or two, but is worth the update. This OS looks a lot more polished than the previous.