[AMD] 10.7.2 works but not 10.7.3 or 10.7.4

[sunfire]

Hey. I was able to get 10.7.2 to work on my AMD system, but if I update to a newer version I am not able to get it to function with the couple of kernels available. I'm not sure why. Is there a step I'm missing? I have an AMD Phenom 9850 Black Edition.

I've tried these 2 kernels. I've had to reinstall Mac OS X twice after trying these.

http://www.osx86.net/view/2723-amd_k...or_10.7.4.html
10.7.4 AMD Kernel - InfiniteMac

I install the combo update manually then replace mach_kernel with either of those and then my system does not boot when I reboot. No kernel panic or anything my computer just resets when I try to boot Lion at that point.