SPI pinout needed for A1534 motherboard


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3 years 8 months ago - 3 years 8 months ago #4709 by wojgp
Hi
Please kindly share pinout for SPI connection to read EFI chip on MacBook Retina 12" A1534. I also need to know the exact chip location :D
Is there any SPI programmer which works under Windows ?
I've found mb service manual here vinafix.vn/threads/macbook-12-a1534-820-00045-10.21690/ but cannot download becuase of no points on accounts :( Please help.
Last edit: 3 years 8 months ago by wojgp.

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3 years 8 months ago #4712 by kotovkot
mb service manual. If you have any luck please write step-by-step your action
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3 years 8 months ago #4720 by wojgp
Thanks, I will post the result if successful.
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3 years 8 months ago #4727 by Gr-oborona
I'm working on the same 12-inch MacBook and want to try to unsolder the chip with the motherboard and flash. I did a post with the question of the position of the BIOS chip, and got an answer. I unsolder the chip but can not find datasheet for this chip. I do not know 1.8 or 3.3 Volt is it?

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3 years 8 months ago - 3 years 8 months ago #4729 by kotovkot
in the mb service manual in page 37 can find the name of spi chip "w25q64fvbyiq" datasheet
and there you can find spi header pinout
Last edit: 3 years 8 months ago by kotovkot.
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3 years 8 months ago - 3 years 8 months ago #4732 by reverendalc
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Last edit: 3 years 8 months ago by reverendalc.
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3 years 8 months ago #4752 by Gr-oborona
You have done a really great job! Thanks you!! You should solder a wires to MB and read dump from your clean mac. Maybe it will be useful in future)))) thanks for post and photos!!!

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3 years 8 months ago #4754 by Gr-oborona
Also thanks you! Я думаю що вже можа робити пости на російській або українській для земляків)))

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3 years 8 months ago #4760 by reverendalc

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3 years 8 months ago #4774 by kotovkot

reverendalc wrote: What is mozha?

it's means "can" in Ukrainian

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3 years 7 months ago #5479 by InDustWeTrust
I also have an a1534 to unlock, was wondering if it's better to use the clip, and if you guys could confirm what is the final voltage required, some other threads it says it's a 1.8v chip, other threads say there are two different efi chips in these macbooks...

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3 years 7 months ago #5480 by reverendalc
There are two SPI roms accessible. The EFI rom is 3.3v and the ssd rom is 1.8v
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3 years 7 months ago #5545 by InDustWeTrust
Thanks!! That means that with a clip for this machine, the required voltage to use would be the usual 3.3v... Am I correct? thanks again!

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3 years 7 months ago #5550 by reverendalc
Correct. To interface with the EFI rom, you will use clip4.0.3 and 3.3v

I can send you the schematic if you'd like to have a look

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3 years 7 months ago #5554 by InDustWeTrust
Thanks!! no need for schematics, that is way beyond my knowledge. schematics and soldering is out of my skills right now.

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3 years 7 months ago #5563 by reverendalc
OMG!!!

I've been meaning to test a theory. You can help.
Email me or pm me industwetrust

Youll have to postpone your brute force tho
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3 years 5 months ago #6292 by InDustWeTrust
I received the clip, and I have used clips and reprogrammers succesfully in the past, although it was a few months ago already. I do have two main questions:

1.- The clip can be connected in two positions, right? which one is the good position?

2.- what chip am I supposing to be re-rprogramming? where can I find a chip scheme so I know where to connect cable 1, cable 2, cable 3, etc... to my typical ebay SOFI reprogrammer?

If I get these two things, I can start testing how to read it. I have an EMC2746 Is it already documented a succesful setup for this 2015 model?

Thanks!!

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3 years 5 months ago #6297 by CygnusX1

InDustWeTrust wrote: I received the clip, and I have used clips and reprogrammers succesfully in the past, although it was a few months ago already. I do have two main questions:

1.- The clip can be connected in two positions, right? which one is the good position?

2.- what chip am I supposing to be re-rprogramming? where can I find a chip scheme so I know where to connect cable 1, cable 2, cable 3, etc... to my typical ebay SOFI reprogrammer?

If I get these two things, I can start testing how to read it. I have an EMC2746 Is it already documented a succesful setup for this 2015 model?

Thanks!!


Checkout this blog ghostlyhaks.com/blog/apple-efi

If I helped you buy me a latte!

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3 years 5 months ago #6302 by InDustWeTrust
Thanks! I only have two main questions really, they rest I already know it, I think, so far. Already reprogrammed many mani mac mini's, imac, macboks. The questions, you guys know this for sure:

Which one of these two positions is the correct one for the white clip this machine uses?

A )



B )


And the last question, how can I provide the 3.3v, in case my programmer does not give enough power? connect an external battery, to what pins in the reprogrammer?

Thanks!!
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3 years 5 months ago #6303 by InDustWeTrust
This is how I have it right now. In the clip side:



On the side to the re-programmer:





Hope this will help other people who bought or might buy the clip. Once I have connected it properly and with the correct energy setup, I should be ready to read the dump, edit it and write it back unlocked. THIS IS A 2015 A1534, not the newer model, this should be easy to do.
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