Yes you´re right! I have A09 hahaha. maybe thats why.. Beside this, i got the system running.. thou it would like some driver-adjustments. So I downloaded the EDP-software and totally reconfigure my kexts-libary, using E6220´s files. When I rebooted, I coun´t login because the trackpad and keyboard didn´t work. Now I´m currently reinstalling yosemite to try again! Never give up! Thank you for your help!