How do I know what PAtch I am on? I  am now in Ops center . what the version of my 777 is SP1d? SP1c?

PMDG has gotten away from using the SPx designation.  Use the OC to check your version, it will tell you if there is an update or if it is current and provides a version number.

 

 

it will tell you if there is an update or if it is current and provides a version number.

 

I don't have any update to be done... as per the OC.. but I get no version number.

it will tell you select  what ever aircraft  you  want  to check,  than  down on the menu  selection click  version  option  to the right  choose  what variant  you have and at the bottom it  should  tell you are up  to date