XBLA on 360 RGH issues

Hi,

I've a xbox 360 slim with RGH (coolrunner rev c) and the "normal" games works perfectly, i put them on internal hdd and freestyle / aurora recognizes the games, but i do the same to xbla games and it doesnt work... i've tried to put them on content folder (hdd1/content/000000) and on a folder created by me, for ex (hdd1/xbla) but two things happens to me:

1 - the game doesnt appear to be choosen or
2- the game appears, i can make download of the update, but doesnt run...

I've tried everything, can anyone give me a hand?

Thanks in advance