I tried xDelta with no avail... please let me know how can I patch rune factory 2 as in this thread. They put a patch but not which patcher they used...
https://gbatemp.net/threads/rune-factory-2-hack-recipes-for-the-wifi-only-weapons.523712/
https://gbatemp.net/threads/rune-factory-2-hack-recipes-for-the-wifi-only-weapons.523712/