No EEPROM/flash device found

Not sure if this is the right place for this topic but I'm having problem with it seeing the EEPROM. I have read most of the forum trying to find the solution, which most people have done but don't mention how they have done it.

I've checked the wiring over and over

Pin1 - 24
Pin2 - 21
Pin3 - 17
Pin4 - 25
Pin5 - 19
Pin6 - 23
Pin7 - 17
Pin8 - 17

ran all the sudo commands needed without any problems

sudo raspi-config
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
sudo apt-get install pciutils
sudo apt-get install libftdi-dev
sudo apt-get install libusb-dev
sudo apt-get install libpci-dev

Downloaded the flashrom from here

sudo git clone github.com/stefanct/flashrom.git

Then entered this

cd flashrom
sudo make
sudo make install
Sudo nano /etc/modprobe.d/raspi-blacklist.conf < empty file

and all I get is No EEPROM/flash device found.

My MBA is a 11" A1466, I've tried the switch in both 1 & 2, still nothing

Even when I run sudo flashrom -p linux_spi:dev=/dev/spidev0.0 I still get No EEPROM/flash device found.

The only thing I'm unsure about is do I need to apply power, from either the battery or the MagSafe, to the board??

What am I doing wrong

Please help !!!

Tried it with pin 3 removed and also pin 7, switch in both places still doesn't work - No EEPROM/flash device found

Yes tried the switch in both positions and the board I am using has no power from the battery or magsafe

Yes tried the switch in both positions and the board I am using has no power from the battery or magsafe

Ok. I tried what you said, connect clip to MBA and then turn on the PI still doesn't see the EEPROM.

I tried another MBA (as I have 20-30 donor boards) and that didn't work.

I removed pins 3 tried that and then both 3,7 and that doesn't work!!!!

My wired are 6" and I'm using 5v 2.4A adaptor

Right I have found the problem, it is the clip SPI connector which is faulty. If I hold the connector in a certain position it will see the EEPROM...

Is the connector suppose to be loose as this one is, I have to hold it in position because if I would let go it would just pop off!!!!

Please advise where we go from here.

Hi CygnusX1

I have check everything and if I hold the clip in a certain way I can read the EEPROM. To get around this problem I have used my microscope to open the gold contacts a little so that I sits firmly into the socket on my MBA.

All is working for now.

Yes all sorted now... done my first read & write to the EEPROM.

Quick question, I know this is the wrong place for this but, do you have and dumps without the serial numbers on them of which I can copy the string?

The reason I ask is because I have 15 boards that I will be selling and I don't want to have the old serial number on them, I would prefer to sell them serial free and allow the end user to put there number on it. I know there is software that will allow you to do this.

Thanks for your help

Thanks

Can any of these files be written to MBA without me inputting a serial number into them?

If not does anyone have a bin file, doesn't matter what year where if you boot to OS x and go to about this mac the serial number will show Unavailable

Thanks

Rick

Rickkap wrote: Hi CygnusX1

I have check everything and if I hold the clip in a certain way I can read the EEPROM. To get around this problem I have used my microscope to open the gold contacts a little so that I sits firmly into the socket on my MBA.

All is working for now.

I think the programming port has some sort of unique raised sections and our clip needs modification for better connection.

I have checked 2010 Macbook Air , 2011 Air both do not have these raised areas.....must be some sort of security measure.

Looks like Apple has changed from Molex to HiRose connectors. The center 'key tabs' show clearly on the HiRose data sheet.