What is the latest version of OSX I can install where everything is working? Post-Install, is there anything that can be done to update and retain functionality of working devices? Sleep is not an issue for me as it is a feature that I disable on any computer I own anyhow. Last but not least should I be using iDeneb or iATKOS? I have seen many guides, none complete! Through google I have found much information but I feel most of it is outdated. I just need to know the answers to the questions asked above and I'm not interested in swapping any hardware, I realize in some versions of OSX I may need to swap wireless cards but this is just going to be more of a tinker toy than anything else.