riri7707-
I somewhat understand what your saying about how this "limits" people from buying cheap cams and then upgrading the firmware. In my case I bought a "legitimate" camera from a reputable company (Nelly's) and paid full price so to me I should be able to upload the latest firmware without jumping through a lot of hoops!
Did you get this firmware from Nelly's? If not, I'd contact them. Presumably if it's supported by them, they can provide you with access to it. Since it's unreleased, I'd be willing to guess they won't.