: Using unauthorized software to manipulate in-game data violates Psyonix's Terms of Service and can result in a permanent account ban. Official Hatsune Miku Collaboration Details
Because the change is local, other players in your match usually cannot see the unlocked titles. To them, you may appear to have no title at all or your original default title. miku client rocket league unlock all title link
The "Miku Client" is marketed as a third-party modification or cheat engine for Rocket League. Websites and video tutorials promoting this tool claim that downloading the client and clicking a specific link will inject code into the game. Promoters claim the tool grants absolute access to: : Using unauthorized software to manipulate in-game data