Even if we ignore the impossibility of the tool working, the act of downloading and running these executables is one of the most dangerous things you can do as a PC gamer. Security analysts have dissected hundreds of "Unlock All" files over the years. Here is what they actually contain:
Even if, hypothetically, an exploit existed that allowed you to unlock items, Psyonix’s anti-cheat system, , is aggressive. EAC scans your game memory and running processes. Any third-party tool attempting to write to Rocket League’s memory will trigger an immediate ban. Rocket League Unlock All Tool