If you look at http://www.dlink.com/us/en/home-solutions/support/product/dir-857-dualband-hd-media-router there's a warning that this firmware is for the North American market only, is there a difference in hardware and/or software for the DIR-857?
I downloaded and installed the 1.02 firmware from ftp.dlink.com and it sure works even thought I'm located in europe...