EZ 3-1 GBA rom problems

Hi, I've heard about people who say that the games do not work on an emulator, but i have an actual GBA flash cart. I was wondering whether there was any tool to fix the problem which says'This game cannot be run on this Hardware'Thanks for looking and thanks for helping.

It sounds to me like you are trying to run a game which had extra hardware inside the cartridge, and the flash cart doesn't have that extra hardware.