A couple of days I'll try to unlock the same exact MacBook
My friend said that tried to read dump from the chip removed from the board but dump size is 8.5 megabytes, and he was not able to read it with the help of his programmer
When I got this MacBook I will describe the issue in detail
I removed winbond chip from motherboard
I read the dump.
Removed place with a password.
Recorded dump to mx25l6406e (not winbond, to try if they a replaceble)
I set mx25l6406e chip on the motherboard
Turned MacBook ON and hit command + R
He no longer asks Efi password and I thought that everything turned out, but...
MacBook connected to WiFi and started internet recovery, downloaded it
and after all this, he asks me to enter a 4-digit PIN
All previous Macbook's downloads OS X but this one asks PIN, and now I do not know what to do?
About ^isn't the 6406E taller with exposed legs, and the winbond/6473E surface mount?
You are right but the wires help to fix it, I have installed chip with legs just to check the result
Later I wrote a dump on nativ Winbond chip and installed it on the motherboard
winbond w25q64fv,do not communication programming/bios
and remove chip bios,programming and ready.
this mac 2015 this is crazy,i not have conector for pass remove
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