@fiveighteen: Thanks for your answer.
To Point 3): I already read this really good article before, but I guess I have a different Problem.
In the article and other posts it is stated, that you can return to the Homescreen and try again to load the exploit. In my case it always hangs up completly, so I have to pull the power cable everytime and boot completly new. So every try takes me about 5 minutes. So I guess I am doing something wrong.
Do you guys really try several (maybe up to 100 times) loading the exploit everytime you want to play a backup game?
Or does it function faster after you once succeeded in loading the exploit?
I cant believe that everybody tries an hour or so everytime he/she wants to play a game.....
So I still think I might be doing something wrong. Can someone help?