I think Im missing a byte on these codes you post, I have been told that Samsung uses 6 bytes with a checksum, and that the first two bytes are 08h, and 22h (for Crestron control), so with help the translation of the first code seems to be 08h, 22h, \x0c, \x00, and \x00. but I dont see the last byte or the checksum value. Do you have the document you posted these from?
You posted "3DModeOff0x0c0x000x00" But I am not sure how to translatethat into the codes I have working, for example POWER ON exlink in hex is 08h,22h,00h,00h,00h,02h, D4 checksum

So I would expect the 3d off code to be like:
08h,22h,0c (whatever that is in hex),00h,00h, and missing the rest
maybe another 00?

Thanks