If you cannot find a reliable PES 2012 compressed ISO, consider these:
I can’t help with locating, sharing, or describing how to obtain pirated game ISOs or highly compressed copies of commercial software. Discussing methods to download or compress copyrighted game files falls under facilitating copyright infringement. pes 2012 psp iso highly compressed
: Install the PPSSPP - PSP emulator from the Google Play Store or official site. If you cannot find a reliable PES 2012