The cleanest, safest version of the patch is hosted on . Search for "Danball Senki W Translation." The file is a .xdelta or .ppf patch, typically around 4-6 MB.
: Some older English patches have a reported bug that causes the game to crash when using the Gashapon vending machine. It is recommended to keep a clean Japanese ISO as a backup to pass these sections. Translation Coverage danball senki w english patch download
If successful, the file size will change slightly. Boot the ISO in PPSSPP (the best PSP emulator) or on a modded PSP/Vita. If the title screen says "Little Battlers eXperience W" in English, you have succeeded. The cleanest, safest version of the patch is hosted on