You must legally dump or acquire a clean, unmodified Japanese ISO of Digimon Adventure (NPJH-50686). It should be exactly in format and not previously modified. Step 3: Apply the Patch xDelta GUI In the "Patch" field, select the file you downloaded from the translation team. In the "Source File" field, select your clean Japanese Digimon Adventure

Do not look for "highly compressed" versions. The standard ISO size for Digimon Adventure PSP is roughly 1.2 GB to 1.4 GB . This is a small size by modern standards and ensures you get the full game with all voice acting and music intact.

: The patched game is confirmed to run on original PSP hardware with custom firmware (tested on 6.60 PRO-B10) and the PPSSPP emulator . Compressed File Expectations

The game utilizes the "Bond/Affection" system. You start with Koromon, Poyomon, and the others. By feeding them, training them, and winning battles, you raise their stats and unlock their Digivolution lines.