Help by iMac 2013 27" corrupt bios EMC2639 (9 beeps)


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3 years 5 months ago #12281 by Roflcat
Hi guys!

I have a question about my 27 inch iMac from  late 2013. There was no documentation available on the internet on how to recover this model from a corrupt BIOS file. The iMac was beeping 9x (3 short, 3 long, 3 short) and looping. This means that the BIOS is corrupted.
For flashing and reading, I used a CH341A (black) USB reader in combination  with a SOIC8 Clip. From this, the attached BIOS was read (did it 3x, same MD5), but It seems to be corrupt. As I'm new to this, I cannot see what is wrong. MD5: FBC47036BBD4B5F997064D98C499EE3E

Can somebody take a look? I also have a same machine for a clean dump if needed. 
One thing to note, the program (CH341A) identifies the BIOS chip as MX25L6406D, while the chip is a MX25L6406E. 

The one that can fix my iMac deserves some beers! (Or coffee ;))
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3 years 5 months ago #12297 by .::iRizwan::.
What is the Serial Number of your iMac?

if i helped you Buy me a Coffee

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3 years 4 months ago #12315 by Roflcat

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