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

without removing chip ?

 

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

 

I use the easy flash magic two and it works perfect

 

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

 

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

 

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

 

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

 

no detect chip of bios

 

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.

 

i can read and write the chip white out any problem

 

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

 

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

 

I don't understand your reply.

 

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!!

 

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

 

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.

 

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

 

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.