Macbook 12" A1534 - 820-00045-10 820-00045-A

Macbook 12" A1534 BIOS
820-00045-10
820-00045-A
Schematics and Boardview

 

[NBS-Elextrixman]

without removing chip ?

 

[abagjery]

without removing chip ?

Yes but I'm using this adapter Chipmunk Magic Easy Flash MacBook A1534 witch you can buy from Ebay

 

[Macfixit]

http://www.cmizapper.com/products/easy-flash-magic.html

I use the easy flash magic two and it works perfect

 

[NBS-Elextrixman]

Ok so now i know what to use to read and whrite dump , but how can we clean a dump for a1534 ? i want to learn. allsow how can i remove username password and icloud from console, for a A1534 , without Efi pin

 

[ThienBui]

Ok so now i know what to use to read and whrite dump , but how can we clean a dump for a1534 ? i want to learn. allsow how can i remove username password and icloud from console, for a A1534 , without Efi pin

here
https://vinafix.vn/resources/how-to-remove-password-bios-apple-add-edit-serial-number.1209/

 

[Jitendrakashyap]

any one tell me macbook air after bios programmed os was not open properly he just loading
anyone know why

 

[K-PAX]

MacFixIt what programmer you have,thanks advance

 

[Macfixit]

MacFixIt what programmer you have,thanks advance

it work on eprom reader low speed and i have made efi killer that remove efi lock 12 sec all models til 2017

 

[K-PAX]

hi guys,i need you help.have one a1534 820-00244 with password,
this machine is diferent a 820-00045 a1534(2015)
the 820-00244 programming with the ch341a,and right now missing video
someone remove password this a1534 2016 ?
my problem is the client,the machine now no have video

 

[K-PAX]

no detect chip of bios

 

[bridx]

Working on a MacBook 12 A1534 820-00244. Am able to read its MX25L6435E ic but unable to write into it. Let me make my terminations through J6100 to confirm if it will work.

 

[Macfixit]

i can read and write the chip white out any problem

 

[bridx]

Hi, could you share how you terminated the connections to the motherboard. Regards.

 

[Macfixit]

tom i make some photo i am now at custom off me repair some board its my job

 

[bridx]

I don't understand your reply.

 

[Gasasoft]

Hi there!
This is my first post on this forum. Im from Serbia!
I have problem with one A1534 820-00045-11.
I remove the BIOS chip from mainboard, and damage one contact on it. I buy a new one on aliexpress and look for dump.
Found 820-00045-A and I guessed is suitable for my 820-00045-11. Programmig went without problems on MiniPro TL866CS programmer (see the picture).

Apple power on like normal but, when I try to install Yosemite, it freeze on approximately 50% on install process. Picture below.

I try several times. Once I heard a message "if you want english for you main language press return button". I press Return button but nothing happened. Progress bar is still on same place. I try install from USB Stick and from Internet Recovery the same thing. I sucsessfully install OSX on many Apple computers without problems but this one is my nightmare.
My questions is:
Is the 820-00045-A BIOS dump suitable for my mainboard 820-00045-11?
Is there something I do wrong during intalation Yosemite on it.
Thanks in advance!!

 

[jawaljawad37]

you shoud not change the program you shoud remouve just password from orginal dump and reprome it

 

[Gasasoft]

I know that but cannot read dump from original BIOS chip, because is damaged.
If anybody have a BIOS dump from 820-00045-11 I would appreciate if send it to me on PM or somewhat, because I not a VIP member yet.

 

[JackT]

Hi there!
This is my first post on this forum. Im from Serbia!
I have problem with one A1534 820-00045-11.
I remove the BIOS chip from mainboard, and damage one contact on it. I buy a new one on aliexpress and look for dump.
Found 820-00045-A and I guessed is suitable for my 820-00045-11. Programmig went without problems on MiniPro TL866CS programmer (see the picture).View attachment 61321
Apple power on like normal but, when I try to install Yosemite, it freeze on approximately 50% on install process. Picture below.View attachment 61322
I try several times. Once I heard a message "if you want english for you main language press return button". I press Return button but nothing happened. Progress bar is still on same place. I try install from USB Stick and from Internet Recovery the same thing. I sucsessfully install OSX on many Apple computers without problems but this one is my nightmare.
My questions is:
Is the 820-00045-A BIOS dump suitable for my mainboard 820-00045-11?
Is there something I do wrong during intalation Yosemite on it.
Thanks in advance!!

Hi i have the same problem with a early 2015 one. i got a ready chip online replace it ok. All OSX installations and preinstalled usb keeps crashing on loading. I think it has to do with the bios dump being for a different cpu version. We need to have a clean ME bios dump or the correct one for the same cpu to work properly. I tried by installed Ubuntu Linux and its working fine.


p.s. We have the same programmer

 

[Gasasoft]

Thanks for the reply.
Bios will eventually appear, do not doubt it. But we need now.
I would be satisfied with Windows 7 or 10, Do you know how to Install those?
The normal procedure is not possible. SSD should be formatted in MS-DOS FAT then boot from Windows bootable USB DVD, correct me if I'm wrong. Tomorow I will try Ubuntu Linux.