I have a device that worked on Link's Awakening DX but for some reason won't work with my Oracle of Seasons/Ages. It is definitely for GBC not just original games (as LA is optionally a GB standard game with GBC enhancements). I think ages back someone said that it's because they were bought in a Euro region as opposed to the US or Japan ones even though the cartridges will work across regions; it's the cartridges themselves. Can anyone help? For example, the max ore in Oracle of Seasons codes that I've found doesn't work.