I managed to solve this, turns out the download I choosed wasn't for my exact model. For more granular selection of firmware use: http://www.samsung.com/download/Model_Select.aspx?type=TV&typecode=1&subtype=LCD&subtypecode=101&model=LE46B650T2P&filetype=FM&language=
I just got my new LE46B650T2PXGZ unit today with the 2009/06/30_002003 firmware. I noticed that there's an upgrade to 2009/10/30_002005 T-CHL7DEUC. I've tried to install this but I keep getting stuck at "No file available to upgrade. Please check it and try again.", I've now spent several hours trying to figure out how to fix this without any luck following the instructions to the exact point.
Does anyone have a good idea of what the issue could be?
Not related but does anyone know if there's supposed to be any support for h.264 via DLNA for this unit?