I mentioned that they have a different screen resolution. Blaupunkt is 800x480, the listed Prestiogio's are 480*272 (whole 505x serie)
I guess firmware from [Only registered and activated users can see links. ] (MSB2531A, 800x480) will suit.
I only found it on elektroda.pl. Luckily, it's stock firmware. If he doesn't manage in the meantime, I'll upload it and post the link here later afternoon.