... I got fooled by my friend that he bought me a pi 2... Thank you very much for your help I would've many more depressed hours if you wouldn't have found that out

Sure, here you go: http://www111.zippyshare.com/v/Sl1qpioM/file.html

Yes, xboxdrv driver is activated.. I've allready checked this wiki page https://github.com/recalbox/recalbox-os/wiki/N64-%3A-return-to-ES-%28EN%29 but it didn't help me...

I'm using a Xbox360 Controller and I've mapped L and R Buttons. I tried MArio Kart 64 and others, too... They are all in .n64 format

So after thousands of tries to config it the right way and many many read solutions which should fix my problem, I got absolutely no idea why I can't play any N64 games on my system. My problem is simple: I try to play any N64 games and all I get is a black screen for some seconds and then it returns to the emulator screen, with decreased screen resolution. I've tried many times to change the config files. Nothing helped. I tried in on my TV and on my PC Screen, no change. Log file is really poor, I don't get any useful information. I'm using Raspberry Pi 2 with Recalbox 4.0.0 Beta 3. btw: I'm really tired cause it took me many hours and weeks to fix that problem and I tried everything what I could found but nothing helped.