THX for the great Guide.  
  
My System is: 
Core i7-640m 2,8Ghz 
NVIDIA Quadro NVS 3100M, 512MB 
8GB 1333MHz DDR3 Dual Channel 
256GB Samsung SSD 
Dell Wireless 375 Bluetooth 
Dell Wireless 5540 3G/HSDPA 
Dell DW1510  
Appstore, iCloud, iMessage and Facetime no problem   
  
only Battery Bar is not 100% (it hangs sometimes) and sleep Mode didn´t go. 
  
Is there a fix for these problems ?