(adsbygoogle = window.adsbygoogle || []).push({}); a few days ago i got my ps3 jailbreaked to cex/dex rebug 4.78.2 but every time if i try to start up a game i get black screen a few seconds and it puts me back into the XMB screen does anyone know how to fix this problem?

Are you using multiman?
If so, you are supposed to select a game in multiman, then you brough to the XMB, where you can scroll up to APP_Home and start the game.