Mario Kart Wii polls for inputs multiple times per frame. By having (gamecube) controller 1 pressing half of the inputs, and controller 2 pressing the exact negative of those inputs, the game cancels out the inputs and reads only half the size on all following frames (until power off), so by inputting all possible inputs on 2 controllers on the next frame (which will fill up double the amount of space - so 4 controllers), you can use the third controller to read past the 4 controllers’ memory region and into “garbage” data. After the input region of memory are the event and save regions. Because an event is already occurring (power on -> menu screen), changing these values will only affect the screen itself until the event that’s running is already over, as long as the value is changed by the time the event is over. What I do is run an event in the background, unlocking each individual aspect that goes towards having 100% of the game unlocked, which writes to the save region after the event memory, meanwhile on certain frames that I need to actually input A. I do so on the rewritten double scaled input table, so it turns out I have to actually hold 64 input units right on the C stick of controller 1. The unlock events only occur for one frame so by doing one event every frame I can unlock all required things before the power on -> menu screen event finishes. I finally finish by proving that everything is unlocked by creating the new license and returning to the main menu screen with B (which involves pressing 64 input units left on the control stick of controller 1 due to the doubled input range).

Is this a real bug, or you just made it up, and the entire reason this even occurs is the gecko code?