Hacking asking about ds cute

[ea-ea]

im new around ere and there is sumthin really bothering me..
i just got my new ez flash 3 in1 to play an extension for ds cute.. but why cant it work? ive made the .nds file for the HMDS FoMT and put it in my EDGE card but my ds cute didnt got the mineral town expansion.. somebody can help me?

 

[HuMaNpUmPkIn]

You have to use a legit gba cart of FoMT.