7210 ring tone problem!!

I was having a problem when i was setting a " caller groups" in nokia 7210, because i wanna use the midi that i installed...
do anyone know how to set it? or use any software to fix it?
i tried MobiMB Media Browser, but it doesnt work for the "caller groups" 's ring tone....also can i change the group icon to another .jpg picture?

Hey i had that exact same problem i went to a nokia store nearby and let them update my pfone and guess what it works perfectly now :D

Greetz Nonnie