Here is the thread where I got my information; Please Help - Final Fantasy Crystal Chronicles : Echoes of Time and Ru - GBAtemp.net
Doesn't hurt to read over this thread. Also, next time please try and use google, all I did was type into google: "Final Fantasy Crystal Chronicles: Echoes of Time IOS needed" and this was the fifth result. Just a heads up so that you don't get flamed if you post again without researching.
Hope this helps!