i?m new here and have a problem with my tv, hope you can help me with

A few month ago, i bought a Samsung JU6430. Is it possible to change the name and description of movies recorder with pvr? I?m able to copy all the files on my laptop (.inf, .ss, .srf, .cip, .mdb, .mta and .PVRPfmChkLog) and tried to edit the .inf file with a hex editor (in the .inf file there is now the correct title). But the TV still displays the wrong title and description. Anyone has an idea what went wrong or what i also have to change, is there an other opportunity, maybe a tool which i can use?
Thanks
Kind regards

Daniel