iMac Late 2013 - Blank screen Loud Fan


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7 years 1 week ago #6662 by sahleemy
EMC: 2638 Late 2013

I Read the EFI Chip using a Raspberry pi and SOIC8 Adapter and followed the Guide to remove the Password.
I Read it 3 times and they all had the same MD5 value
I Replaced the first $SVS instance and everything after it until i got the the second $SVS.
After erasing the EFI chip and flashing the clean file to it, the iMac wont boot up.

When i press the power button the fan will start spinning at full speed and the screen will stay blank.
I've tried to flash the original file back but i get the same problem.
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7 years 1 week ago #6667 by cyber16
If you FF out everything to the second #SVS then you removed to much
Try this

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File Name: iMacClean.zip
File Size:4,166 KB
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