Apple Macbook Pro A1502 Retina EMC 2835

lrervicios wrote: Hi!!

Hello Everybody im new to the forum thank you for this awesome place.

Im trying to unlock EFI Pin from a Macbook Pro Early 2015 A1502 EMC 2835

I tried the teensy stuff connecting it to usb port to brute force the pin but it doesnt work as it seem to have 6 digit EFI pin.

Then i tried to READ the SPI Flash memory i Disoldered it and Connect it to a Ch341a SPI Programmer to read IT.

Its a winbond 25Q64FVIQ WSON 8 pin package

I read it Ok and Got a BIN FILE then i EDITED the $SVS FILLING With "FF"

Then i erased the chip and programmed AGAIN with clean DUMP and resoldered again to motherboard.

Then when i try to turn on the laptop It doesnt show anything on screen, it doesnt turn on at all

The motherboard get hot as it seems to be working and some times the fan spins but it doesnt give any video signal, screen stays in black.

When i see the logic board it seems that i accidentaly moved a small resistor just beside the VCC pin of the winbondchip

Here i attach the original BIN FILE and BIN FILE CLEAN

miosucio is the bin file without cleaning $svs region

miofinal is the bin file with $svs cleaned

lrervicios wrote: Hi!!

Hello Everybody im new to the forum thank you for this awesome place.

Im trying to unlock EFI Pin from a Macbook Pro Early 2015 A1502 EMC 2835

I tried the teensy stuff connecting it to usb port to brute force the pin but it doesnt work as it seem to have 6 digit EFI pin.

Then i tried to READ the SPI Flash memory i Disoldered it and Connect it to a Ch341a SPI Programmer to read IT.

Its a winbond 25Q64FVIQ WSON 8 pin package

I read it Ok and Got a BIN FILE then i EDITED the $SVS FILLING With "FF"

Then i erased the chip and programmed AGAIN with clean DUMP and resoldered again to motherboard.

Then when i try to turn on the laptop It doesnt show anything on screen, it doesnt turn on at all

The motherboard get hot as it seems to be working and some times the fan spins but it doesnt give any video signal, screen stays in black.

When i see the logic board it seems that i accidentaly moved a small resistor just beside the VCC pin of the winbondchip

Here i attach the original BIN FILE and BIN FILE CLEAN

miosucio is the bin file without cleaning $svs region

miofinal is the bin file with $svs cleaned

GhostJas wrote:

lrervicios wrote: Hi!!

Hello Everybody im new to the forum thank you for this awesome place.

Im trying to unlock EFI Pin from a Macbook Pro Early 2015 A1502 EMC 2835

I tried the teensy stuff connecting it to usb port to brute force the pin but it doesnt work as it seem to have 6 digit EFI pin.

Then i tried to READ the SPI Flash memory i Disoldered it and Connect it to a Ch341a SPI Programmer to read IT.

Its a winbond 25Q64FVIQ WSON 8 pin package

I read it Ok and Got a BIN FILE then i EDITED the $SVS FILLING With "FF"

Then i erased the chip and programmed AGAIN with clean DUMP and resoldered again to motherboard.

Then when i try to turn on the laptop It doesnt show anything on screen, it doesnt turn on at all

The motherboard get hot as it seems to be working and some times the fan spins but it doesnt give any video signal, screen stays in black.

When i see the logic board it seems that i accidentaly moved a small resistor just beside the VCC pin of the winbondchip

Here i attach the original BIN FILE and BIN FILE CLEAN

miosucio is the bin file without cleaning $svs region

miofinal is the bin file with $svs cleaned

Here it is. EFI UNLOCKED BIOS