Due to the PSP's kernel and Dynamic Memory Allocation (DMA), variables like "money" or "character position" may not always reside at the same static address every time the game boots.
If you download a .zip file, unzip it to find the cheat.db file. If the file has a .txt extension (e.g., cheat.db.txt ), rename it by removing the .txt so it is simply cheat.db . Installation Guide (Step-by-Step) Cheat.db Ppsspp