I just found a cool emulator on iPhone/ iPod that doesn't require any Jailbreak or hacking involved! All you have to do is download the emulator, once in, there should be a search sign. Click it and it will lead you to all types of Pokemon games for the gameboy including emerald and FireRed. There are also other games too! If you can't install the emulator, go to your settings, general, then go to date and time. Change the year to 2012 and reinstall the emulator. It will work. I hope you guys use this!
I had this before for a long time didn't fuck anything up. Also when you download it you need to set you're date a year back on first start up of app. After you can set back. Don't know why fucked yours up