djrhettmc Posted January 21, 2010 Share Posted January 21, 2010 DUMBEST thing I have ever done. I have built my own OSX86 box. I am smarter than this. Accidently used MyHack to ruin my firmware/EFI on my 'authentic' real iMac (Early 2008), model 8,1 There is ZERO information on 'firmware restoration' on Apple.com support. I CAN boot to the original Leopard system restore OSX installer. Have tried restoring from Time Machine. Won't boot. Only white screen instead of the Apple logo. HOW TO RESET? Anyone hosed a real Mac with MyHack installer accidently? I CANNOT be the first.... Thanks for ANY info! The local shop reccomends trying to install again via Target disk mode.... I need firmware restored, the problem is NOT on the hard drive... How to 'flash' the EFI firmware, now wrecked by Chameleon...????? Rhett (rhettt@gmail.com) Link to comment https://www.insanelymac.com/forum/topic/208398-myhack-i-seriously-screwed-my-real-imac-early-2008-81-firmwareefi/ Share on other sites More sharing options...
naddy69 Posted January 22, 2010 Share Posted January 22, 2010 Do a search on firmware update. I turned this up: http://www.apple.com/downloads/macosx/appl...reupdate13.html Link to comment https://www.insanelymac.com/forum/topic/208398-myhack-i-seriously-screwed-my-real-imac-early-2008-81-firmwareefi/#findComment-1392290 Share on other sites More sharing options...
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