Make a clean install and after follow these steps. 1.open chameleon wizard (last version) 2.make sure to tick Ethernet built in on org.chameleon.boot click save 3.open system preferences and on network delete ethernet device click apply. 4.go to library/preferences/systemgonfiguration and delete NetworkInterfaces.plsit 5.restart system 6.again on system preferences network add a new ethernet device and rename it to en0 click apply 7wait for it to get the ip address and try to log in on iMessage! should be ok now!!!!! share this if it works!!!!!