Howto install : - choose and download kexts pack for ALC1200 - remove VoodooHDA ALCinjector.kext AppleHDA.kext (don't remove this if you're installing legacy version) ALC1200fix.kext and any audio kext you could have installed in /Extra or in /System/Library/Extensions - unpack the zip file - run kexthelper - install kexts - reboot Obviously backup kexts you need. ====Q/A==== Q: What happens when I commit an update, for example from 10.6.1 to 10.6.2? A: You must reinstall those hacked kexts, because the update overwrite the vanilla hacked applehda kexts. Should even happens that the update doesn't overwrite the old applehda kext driver, so in this case, you don't need to reinstall. Q: I'm experiencing pop sound, how can I solve this? A: Try setting your hack as MacPro3,1 in /Extra/smbios.plist =========== ==================== SNOW LEOPARD and LION ========================== **First method** : with DSDT Injection, patched AppleHDA, and NO HDAenabler attached. ...