@Dell Dude
Sharing your files to fix iMessage is a bad idea. Each system should have it's own unique serial # and other factor. Ethernet must be set as en0 and wifi as en1 or en2..etc.
As for you BT and Ethernet
Try this for BT, try this. Remove all other kexts you have added for BT
What ethernet does system have?
If Intel, try IntelMausiEthernet.kext or IntelMausi.kext
For Realtek, try RealtekRTL8111.kext