i dont get you sorry ?Its just a case of downloading the proper version of iTunes available now
When you say 4.3.3 do you mean 4.3.5 because that is where you looking at downgrading to. I'm fairly sure you won't be able to go back to 4.3.3 unless you have the SHSH saved.
I would just put it into DFU mode and try it. Worst that will happen is that you'll need to restore the phone to beta 5 again.
Your developer account payment does not come from your iTunes account funding.
so the iTunes music iCloud beta isn't for outside US? i only see options for books and apps
I had this, ended up uninstalling everything apple related and installing the beta itunes from scratch