Macbook Air 11 EMC 2631 efi chip dump done


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8 years 3 months ago - 8 years 3 months ago #2297 by backdoor72
I followed your tutorial and i think i did all good , i edited my self the file *.bin with hex editor, can somebody please check if i did good my homework before i write back to the chip
thx
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Last edit: 8 years 3 months ago by backdoor72.

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8 years 3 months ago - 8 years 3 months ago #2298 by cyber16
I did not compare your two files, I figured I would remove the password from the locked zip and place it here along with a pix with the location highlighted, You can compare that with your work to that and maybe others will learn

as well.
Btw you can test an air board outside the shell if you have an external video cable, just hook up the magsafe i/o board and make sure the heatsink is on the cpu, really no fan needed for a short test boot. I use an external keyboard & mouse
It will likely boot a little slower due to some things not connected kind of in a limp mode, but its a way to check since you are hard wired to the efi chip, may want to disconnect from the programmer first leaving the leads connected, be real careful when removing them leads from the chip, don't want to pull the balls out with the the leads.

File Attachment:

File Name: MacbookAir...2631.zip
File Size:4,327 KB
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Last edit: 8 years 3 months ago by cyber16.
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8 years 3 months ago #2300 by CygnusX1
The cleaned bin file looks good to me!

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8 years 3 months ago - 8 years 3 months ago #2317 by backdoor72
I wrote back the bin file to the chip it works like a charm B)
@ cyber16 thanks for your advice, i know that i did a risky job soldering wires direct to the chip, i could use also the gold pads but near the chip there are resistors don't know if can influence the read
another thing when i edit the bin file i haven't touched the line where this bytes are ($SVS°...Zþþ....) only filled the rest with FF as you can see in the pic
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Last edit: 8 years 3 months ago by backdoor72.

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8 years 3 months ago #2318 by CygnusX1
Never do anything to the second $svs part of the bin file.

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8 years 3 months ago - 8 years 3 months ago #2332 by backdoor72

CygnusX1 wrote: Never do anything to the second $svs part of the bin file.

indeed i didn't touch the second the second $svs part i just want to show what i edited in the locked.bin to answer cyber16
Last edit: 8 years 3 months ago by backdoor72.

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8 years 3 months ago #2333 by CygnusX1
Ahh... gottcha

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8 years 3 months ago #2334 by cyber16
Glad it woks for you :cheer:

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8 years 3 months ago #2337 by thaGH05T
I actually need to do a tutorial on navigating through EFI to make ppl a bit more comfortable as well as explain which types may be encountered.

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