Request for 2.7 Early 2013 15" MBP A1398 EMC 2673

Hi everyone, I hope that I found the correct chip on the following MBP. Attached is a pic of the chip as well. I tinker around with electronics enough that I am very confident that I can do this, so please let me know if I found the correct chip, if somebody has the dump already, and what I need to do next: Thanks for your help! -Stach

MacBook Pro “Core i7” 2.7 15” Early 2013
Model # = A1398
EMC # = 2673

Chip
25Q064A
13E40
99 CHN
235007

thaGhost, thanks for the confirmation! Now I need to purchase both the Raspberry Pi and the "Pomona SOIC8 clip". Since the original Rasperberry Pi's are harder to come by and I'd like to have something with a little more horsepower to use later, I'm assuming that the Raspberry Pi 2 model B will work fine? If so, which GPIO headers diagram (from your tutorial) would I use as a reference for this, or is another one need for the Pi 2 model B?

Thanks in advance for all of your help!
Stach

www.raspberrypi.org/products/raspberry-pi-2-model-b/

The Raspberry Pi 2 has an identical form factor to the previous (Pi 1) Model B+ and has complete compatibility with Raspberry Pi 1.

Should works fine.

Thanks Token.Paul, I'll be back in a week or so after I get it all setup.

-Stach

I finally got all of the hacking hardware, configured the Pi and while connecting the jumpers per your blog , but I noticed the following issues between the graphic and description for connecting the clip to the Pi:

1) The details for Pin #5 are omitted in the "definitive answer"
2) The details for Pin #6 do not match what the graphic shows. In the graphic Pin #6 follows the green wire to pin #23 on the Pi, but down below it says to go to pin #19 (which is where Pin #5 yellow shows in the graphic).

The way that I patched my cables is below (per the graphic), but I was not able to get a successful read of my chip (attached is the output from "sudo flashrom –r ~/efi/read1.bin -V -p linux_spi:dev=/dev/spidev0.0"):



Here's how the information below the graphic should read I think:
Pin 5 of the chip which is MOSI (Master Out Slave In) goes to pin 19 on the Raspberry Pi.
Pin 6 of the chip which is SCLK goes to pin 23 on the Raspberry Pi.

Thanks in advance for your help, it is much appreciated.
Stach

So I kept my wires connected per the graphic, reseated the clip and now I am getting a successful read. I still think the pinout descriptions below the wiring graphic should be updated. I will be attaching my dump in a little bit, but do I need to worry at all by the following "warning" from the flashrom log, as I seem to be able to read it just fine?

Found Micron/Numonyx/ST flash chip "N25Q064..3E" (8192 kB, SPI).
This chip may contain one-time programmable memory. flashrom cannot read
and may never be able to write it, hence it may not be able to completely
clone the contents of this chip (see man page for details).

-Stach

I used a hex editor to update my dump and then write it back to the ship successfully. Everything worked as expected and thanks so much for your assistance. I would like to remove my serial number from my dump before attaching it, what can I search for to do that?

-Stach

Just search your Mac serial. Is a 12-symbols starting with C02... But firmware contains two similar serials one is a Mac serial and second is a first part of the 'unlock seed', so refer to output of this command:

ioreg -l | awk '/IOPlatformSerialNumber/ { print $4;}'

and look that number in the dump.

Attached is my cleaned (serial and password removed) dump. The Serial # was changed to "SerialGoHere" and it is from the system listed above.

Let me know if you need any additional information and MANY thanks for your guide and help!
Stach

Hello I have the following problem
I have the same chip and the same model

to make a dump of my chip modify and load it gives me error in the verification and probe with STACH dump and also gives me error to verify that you can be wrong?

my error

Looks like erase/write failed. Are you did a backup of your chip?

yes i have dump chip If I delete a now 4 times the chip and I'm testing

Just try to read it and compare the current content with dumped at first time.
What about pins 7 and 3, they are connected?