Thanks alot !!!!!!!
it's working.
Little help for next users :
Install latest firmware 3.8F, then download this file http://filetrip.net/f23166-YSMenu-for-M3RealM3i-6-42.html
unrar the folders "TTMenu" and "Systems" and the file "YSM3.nds" in SD card,
Then when you start iTouch, select YSM3.nds...