On some versions of PPSSPP, you may need to change the emulator's system language to Spanish (Latin America) first, then back to English within the game to "force" the translation to stick. Where to Find Downloads
The most reliable way to get English is to use the US or European (ULES-01595) versions of the game, which come with English as a built-in option. pes 2014 psp english language patch verified
Finding a verified English language patch for on the PSP is a common goal for fans of this classic football simulation. While Konami released regional versions that include English natively, many users who have downloaded non-English ISOs or modified versions (like those from the South American or Indonesian modding scenes) require a specific patch to translate menus, text, and commentary. Is There a Verified English Patch? On some versions of PPSSPP, you may need