Hacking R4ultra- cheat problem..

[Lyzard]

Hi, today i tryed new cheat files on my r4ultra, but nothing appeared. So this time i tryed with ysmenu firmware, i can see the cheats, and enabled them. but nothing changed. i can see the cheats but can't use them. what should be problem?

 

[niu]

try akaio 1.4.1
http://gbatemp.net/index.php?showtopic=137400

 

[Lyzard]

I already tryed this. akaio is working, but everything is black except game/folder icons. And when i start any game, i m getting white screen.