Downloading copyrighted PSP game ROMs/ISOs (including Inazuma Eleven games) is generally illegal unless you own the original physical disc and are creating a personal backup—or the game has been officially released as freeware/abandonware (which is not the case for Inazuma Eleven).
Some popular sites for PSP ISO downloads (not necessarily recommended) are: inazuma eleven psp iso 2021
However, the topic of distributing or downloading PSP ISOs sits in a legal and ethical gray area. Game ISOs are typically copyrighted by their publishers; sharing or downloading full game images without permission can infringe on copyright law. In response, the community often emphasizes lawful alternatives: purchasing official rereleases or digital versions where available, buying secondhand physical copies, or using homebrew tools to dump ISOs from legally owned UMD discs for personal backup and use. buying secondhand physical copies