Some UPD files require full replacement. Simply delete your old save folder and paste the new one. Other updates use a tool to merge your partner progress with a new card database.
: You can find various versions (e.g., all cards x9, max rank, no banlist) on the GameFAQs Save Game Files page . Installation (PPSSPP) : Extract the downloaded ZIP folder. yu gi oh arc v tag force special save data upd
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Paste the game save folder (typically named NPJH50925 ) into this directory. Restart the emulator; the game will auto-load the new data. 3. Adding DLC Cards Some UPD files require full replacement