Not all patchers are equal. The best FreeDVDBoot ESR Patcher GUI tools offer:
To bypass this, the homebrew community created . ESR is a clever piece of software that patches your ISO file before burning. It tricks the PS2 into thinking a burned DVD-Video movie is actually a game. The PS2 always reads DVD-Video discs without checking for the wobble. ESR sits in between, and when the console tries to play a "movie," the ESR loader hijacks the process and launches your game instead. freedvdboot esr patcher gui