EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B

[llcoolr]

hi
newbie here
i have a1466 with firmware password
and i have this programmer
https://www.xeltek.com/refurbished-p...mmer-clone-en/


https://www.xeltek-cn.com/en/sp501s.html


can fix it


i've already removed bios ic it's

[llcoolr]

anyone can clear firmware passcode for a1466_820_3437_b

[peste]

Originally Posted by llcoolr

anyone can clear firmware passcode for a1466_820_3437_b

try..

[llcoolr]

Originally Posted by peste

try..

working good
thxxx

[manusg]

hi
i have a 820-3437-B with corrupted efi file
my macbook turns on ok but it shows the folder with questionmark even with a good ssd connected, i replace the spi rom chip from a working board and it boots ok with apple logo and the bar loads up but of course it doesnt enter the system because the spi rom chip is from another mac

i extracted the bin file from the damaged mac can anyone do the process for me to the bin file so i can load it back to the chip and be working?

i really tried doing the process you people explained in this post but i couldnt do it because i dont have linux

i would really appreciate

thanks in advance

[manusg]

nobody?

[mferna14]

Please watch this Video carefully, I learnt all from this video... Fsys & Checksum has to be corrected in order for the notebook to work. Or send me the Notebook serial # & the EMC # of your notebook, I will send you a good updated working file, Just you have to program it to the SPI BIOS & solder it.. Nothing else you have to do.
check this useful youtube video https://www.youtube.com/watch?v=poA8HByYqTM

[manusg]

My friend thank you for answering

I understand the video you posted the problem is that i dont have linux so i cannot use those programs

The bin file i uploaded is from the macbook iam trying to fix so it has the serial number inside it. The emc is 2632 and the board 820-3437-b

Do you need something else? If you could do this and give me the fixed bin file ready to upload it to the chip i would be really grateful!!

[peste]

Originally Posted by manusg

My friend thank you for answering

I understand the video you posted the problem is that i dont have linux so i cannot use those programs

The bin file i uploaded is from the macbook iam trying to fix so it has the serial number inside it. The emc is 2632 and the board 820-3437-b

Do you need something else? If you could do this and give me the fixed bin file ready to upload it to the chip i would be really grateful!!

try..

[manusg]

Originally Posted by peste

try..

no apple logo with this file
i load it to the chip and i have blinking folder with questionmark again

[manusg]

Originally Posted by mferna14

Please watch this Video carefully, I learnt all from this video... Fsys & Checksum has to be corrected in order for the notebook to work. Or send me the Notebook serial # & the EMC # of your notebook, I will send you a good updated working file, Just you have to program it to the SPI BIOS & solder it.. Nothing else you have to do.
check this useful youtube video https://www.youtube.com/watch?v=poA8HByYqTM

serial: C02LPRSYF5V7
emc: 2632

if you could do send me a good working file so i can program it to the spi i would really appreciate it

[piernov]

Why not use the file that has already been posted at the beginning of this thread…?
https://badcaps.net/forum/showpost.p...01&postcount=4

[manusg]

Originally Posted by piernov

Why not use the file that has already been posted at the beginning of this thread…?
https://badcaps.net/forum/showpost.p...01&postcount=4

because i dont have linux to write the serial number into this file and do the checksum

[manusg]

Originally Posted by manusg

because i dont have linux to write the serial number into this file and do the checksum

that is why i am asking if someone can do it for me

[mferna14]

Here you go.. With your serial number (C02LPRSYF5V7) & 100% working BIOS dump & ME Region cleaned

[piernov]

You don't need Linux to use a hexadecimal editor.

[Yamato]

@Piernov, thanks so much for your video guide. My machine is up and running now. You have a new subscriber!

I received an A1466 820-3437-b machine for liquid damage repair. A prior repair attempt was made and they tampered with the SPI_ROM (no idea why).
I managed to get the machine to power on after doing some board level repairs
but the machine would not boot to the login screen (catalina), the loading bar will reach 100% and the machine just freezes there. on High Sierra it would boot to the login screen, but as soon as you login, it freezes on the loading screen. Ordered a TL866II to re-program the bios. I battled afew hours trying to program the new chip and succeeded eventually using your guide.

It took hours because I didnt have a clue how to use the programmer AND I had 3 bad SPI_ROM chips in a row (whats the chances right ?!?!), worked with 4th IC from donor board.

Thanks so much!

[Yamato]

For those of you who want to use the TL866II+ programmer under Linux.

I got it to work under ubuntu.

https://systemembedded.eu/viewtopic.php?t=44

[bsmart]

A1466 820-3437-B
AFTER flash dump just sound no display

[elsomer]

Hi, can someone help me to unlock this dump of this macbook air 1466 emc 2632 820-3437-b , it is locked when i try to install so, thanks