Je to tady
http://nba-2k.com/nba-2k12-complete-roster-update- 01-04/#disqus_thread
Je tam i jakási diskuse, kde se o tom baví a jeden uživatel tam i radil přepsat jeden soubor, ale ani tak to nefunguje

tady je komentář s té stránky
i have same problem as eMi...put the ros file into the saves and went in to the game to load it and roster is still the same..tried with reseting roster then load it again and still no change...if anyone has a solution i would be very grateful...

If it still doesn't update change the filename (the one you downloaded) which named
Complete.ROS to Roster.ROS.. Just simply change the Complete to Roster for it to be overwrited..

Ať sem dělal co dělal zatím se mi to nepovedlo aktualizovat