gameboy4iphone problem?

I jailbroke my ipod and this is the first thing I wanted to try.. GBA on iPod touch!
I downloaded that from Cydia and I launched it, then it showed that I had no ROMs (logically) so it then threw me to doperoms.com and I downloaded pokemon emerald from there, for GBA and then restarted iPod and it still shows there’s no ROMS. I tried a different ROM and it didn’t work either. I also tried sending the ROM from my laptop over wifi, and it shows that there are ROMs in the GAMEBOY folder, but they’re not on my iPod..? Help!!