Save files are region-locked. A US save (ULUS10391) is not compatible with a European (ULES01213) or Japanese game version. Managing Your Save Files
: It significantly shortens loading times by allowing the PSP to read data from both the physical UMD and the Memory Stick simultaneously. 2. High-Quality Community Save Files
: These allow users to synchronize saves, install all DLC quests at once, and even convert save files between US (ULUS) and European (ULES) versions.