At this time, there is no way to upgrade the WiseLink to the WiseLink Pro and use the movie feature. The mpeg is exclusive to the 7-Series and up.
I have Purchase a 46A650Air LCD and sadly realized it's usb is not supporting MPEG as 46A850 does. I can only watch pics in 1080 resolution. I am looking for a way to be able to watch movies with 1080 resolution. Is that possible to upgrade 46A650 to be able to watch movies via USB?