arnabdutta, BatchProduct is another version of Firmware upgrade utility that is used commercially for flashing up to 16 players at a time. I am not sure about remoteupdate but think it may be for use with several computers linked to increase the number of players that can be connected.
I also have a player that is similar to yours but silver and have uploaded the full version firmware
HERE
Also check the mini CD that came with your player mine had a copy of my firmware on it.