maddafacca replied to Micky1979's topic in Guides and Tutorialshi, i have 92HD87B1 on my laptop. and i've never attempted to patch applehda (originally installed) so, just following this instruction , can i patch my 92HD87B1 ? i have one more question, i saw here a kext for my 92HD87B1 . http://www.osx86.net/view/3356-applehda_idt_92hd87b1_mountain_lion_ver_...html but i couldn't manage to work it, i've even patched my dsdt but still no luck. it gives me sound assertion errors during boot screen.