There is macbook pro 2012 13" i5 2.5 I'm update os x to 10.8.4, then isight not working anywhere, (in photobooth, imessage, skype, facebook). There are no isight in system preferences. Then I reset pram, smc. I used another profile. No effect. I reinstal mac os with format hard drive. I instal 10.7.5. But camera not working. I reset (second) cms, pram. No effect. I saw in google. There is very frequent problem with update on os x 10.8.x. I think, that is software problem, not hardware. questions: 1) is there a solution? 2) is there problem on firmware of smc/efi ? 2a) Is there way to downgrade firmware? I wanna working isight... Thanks for replies, p.s. Sorry for my english.