Have you tried the new update? Found any bugs or secret references? Let me know in the comments below.
Searching for a " Martin Mystery Online UPD" guide typically refers to the various video game adaptations of the animated series, particularly the point-and-click adventure or the Nintendo DS action-exploration titles. There is no currently active official "online" MMO, so these guides focus on the classic single-player titles often played via online emulators or legacy hardware. Martin Mystère: Operation Dorian Gray (PC) martin+mystery+online+upd
If you want the classic experience: