I would not recommend it. Always use latest kexts.
Hi Allan I have a mixed configuration (Z77 with HD 3000 + GTX 560 Ti) and I always had problems to make HD 3000 recognized and working. The only solution for me was to use modded kexts. As a matter of fact I'm still using some kexts I found in download section and everytime I update the system I have to use them again with kext wizard. I'm on Chameleon. I know this is not the right way to do that and maybe it can be related also to my Preview app that doesn't work well since my first Yosemite installation. Could you please suggest me the right way to fix that? Now I'm on 10.10.4 of course. Thanks in advance.