Hello there!

I've updated my US N900 with the global firmware (since I live in Brazil, I thought this firmware would be more suited for me). But now the Ovi Store is not working, tells me to update my device using the App Manager. Is this happening because of the global firmware? I'm about to reflash it with the US firmware, but I prefer not to pass through the hassle of downloading and reinstalling all the apps again if I don't have to, or if it won't fix anything.

So any idea of what's happening?