ds

down load game unzip transfer to card put in game gives me load rom failed errcode 7 what do i do

Take a look in the Common Issues thread.
https://www.romulation.org/forum/index.php?topic=1462.0

this happens to me, too. Any help?

if you have the correct firmware on your card, and extacted the .nds file from the Rarthen all should be fine

It works on one game card but not another, so am assuming it is the card...

same make of card?

No one asked but what is your card make?

On ttds if you extract directly from archive to micro sd card it says rom loading failed. You´ve got to extract files on your computer, then copy them in sd card. ;D