It's basically the same procedure as upgrading to 10.6.7 but u have 2 more kexts to back up but in order for your wifi to work you need to back up the 10.6.7 version of the airport monitor file or something and replace it when you upgrade otherwise it'll keep freezing up and be real laggy. Google what the actual file name and location because I don't remember exactly and can't look it up atm. Good luck!
Hi I'm pretty much in the same situation you are. I tried to install iatkos L2 with no success. Next, I installed iatkos s3 v2. Then I tried to upgrade it from 10.6.7 to 10.6.8 but got a kernel panic. Could you please detail what you did in order to get your 1318 upgraded to 10.6.8?
So I successfully installed iatkos l2 but the first boot gives me a kernel panic and it has to do with some kexts, that begin with "com.apple.iokit" and idk what to do, check out my post on this other thread gives more of an explanation