Firware used on Samsung HLR61618

How do I check the firmware used on my Samsung HLR6168WX/XAA circa July 2005?

For newer (2007 onwards) one goes thru the Setup screen to Function help
http://www.samsung.com/us/support/po...ype=&model_nm=
But this does not work on my 2005 DLP.

I am having a lack of stability issue using CableCards on Cablevision and I need to know what firmware my TV has to see if it can be upgraded.

Thanks

Ooops just notice a typing error in the headin.
It's a 6168