Yeah, I looked at the manual and had no clue on what to do in the beginning. Copy decrypted exefs.bin to workdir. Run build_layeredfs.bat, when it prompts 'Enter the folder of the layeredFS file:', enter the path that the translation file will be placed on SD card, ie. 'layered'. (using a game-unique name is recommend) Copy to workdir\ layeredfs.plg to SDCard, the path is plugin\GAMEID\layeredfs.plg . Prepare translation data. Copy the files which are different from original version to the folder you entered in Step 2 on SD card. (Copying unchanged files is not essential.) The screen will flashes green when the genuine card runs, the layeredfs plugin will be loaded and start redirecting file accesses. So...how do I make a decrypted exefs.bin?