Ok, to make the long story short, i noticed that when i had a wallpaper up, gameboots (both custom and original) no longer show. the wallpaper stays up and you hear the gameboot, but it doesn't play. After restoring my flash0/vsh/resource files and replacing my custom files one by one, i found that the custom wave file (system_plugin_bg.rco) is what caused the problem. I then flashed a different custom wave, but that didn't fix it, so I'm assuming any custom wave that is flashed will do this. I don't know if this was discovered or mentioned before, but id appreciate any feedback about it and if other psps are experiencing this. Thanks :3.