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Old 02-14-2021, 10:11 AM   #1
longislandtea
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Default MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Hi, I' ve this MacBook Air with a strange problem. This laptop come in to my shop with initial problem PULSING (ON/OFF, no fan)

I wrote this attached bios dump that I clean me region by ME INJECT software and Macbook Power on but have a strange defect.

The Macbook Power on only when I connect the AC adapter without battery. It Never power on by clicking power key on keyboard. I also tryed to power on by SMCbypass on the motherboard.

When Macbook is ON and I press ON/OFF key the macbook go off without problem

I tryed to clean me region using FIT but I can't find efi payload for this model MBA7,2.


Can anyone help me?
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Old 02-14-2021, 10:22 AM   #2
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Did you make a bios backup before you started ? .MEInject isn`t recommended for anything over ME 6 in my opinion,and certainly shouldn`t be used with apple ME fw . Post the original bios backup
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Old 02-14-2021, 12:26 PM   #3
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

What was pulsing on / off?

Please post more details.

Very possible that you have a defective battery.

Restore your bios and post your voltage rail that is pulsing.
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Old 02-15-2021, 03:23 AM   #4
longislandtea
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Ok. This is the two dump.
Attached Files
File Type: zip original not working.zip (4.27 MB, 43 views)
File Type: zip working with defect.zip (4.70 MB, 51 views)
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Old 02-15-2021, 11:04 AM   #5
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Quote:
Originally Posted by longislandtea View Post
Ok. This is the two dump.
try..
Attached Files
File Type: rar 10.0.35.1012_outimage.rar (3.77 MB, 54 views)
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Old 02-15-2021, 03:58 PM   #6
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Not working
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Old 02-16-2021, 04:14 AM   #7
peste
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Quote:
Originally Posted by longislandtea View Post
Not working
try..
Attached Files
File Type: rar 10.0.35.1012_outimage.rar (3.76 MB, 45 views)
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Old 02-17-2021, 09:28 AM   #8
tata123
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

buddy,

pulsing could also be an failuren with clock chip, check volatges, check Rails!!!

if you dont know which rails, ask for help!!!
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Old 03-22-2021, 01:23 AM   #9
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

hi guys i got a 1466 820-00165a with no fan spin and amber led on charger . the cpu warms up too but not powering up and does draw current.
i read spi but cant find file that matches my backup .00000000- 000FDFF0 ARE ALL F()
Attached Files
File Type: rar A1466 W25Q64BV_20210318_161432 BAK.rar (4.15 MB, 49 views)
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Old 03-22-2021, 01:59 AM   #10
peste
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Quote:
Originally Posted by mek007 View Post
hi guys i got a 1466 820-00165a with no fan spin and amber led on charger . the cpu warms up too but not powering up and does draw current.
i read spi but cant find file that matches my backup .00000000- 000FDFF0 ARE ALL F()
post serial number S / N
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Old 03-23-2021, 02:59 AM   #11
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Quote:
Originally Posted by peste View Post
post serial number S / N
its FVHWRA2FJ1WK
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Old 03-28-2021, 02:28 AM   #12
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Hey guys am still in need of help if anyone has any ideas
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Old 03-28-2021, 03:38 AM   #13
peste
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Quote:
Originally Posted by mek007 View Post
Hey guys am still in need of help if anyone has any ideas
try..
Attached Files
File Type: rar 820-00165_cleanME_NEW.rar (3.73 MB, 155 views)
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Old 07-17-2021, 02:10 PM   #14
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Quote:
Originally Posted by peste View Post
try..
Can you tell me if this EFI is specific to the 2017 EMC 3178 or is this for any 820-00165 board? I have an EFI ROM file from a 2015 board and it doesn't start up on my 2017 board. I have heard that the EFI for this model is specific to the 2017. Can someone confirm this either way?
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Old 07-18-2021, 01:55 AM   #15
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Quote:
Originally Posted by ACS-Repair View Post
Can you tell me if this EFI is specific to the 2017 EMC 3178 or is this for any 820-00165 board? I have an EFI ROM file from a 2015 board and it doesn't start up on my 2017 board. I have heard that the EFI for this model is specific to the 2017. Can someone confirm this either way?
if you have the same board, change the Serial Number S / N, and clean the region me, and do the test, don't forget to do before writing on the chip, a backup of the original bios of the laptop.
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Old 09-14-2021, 03:25 AM   #16
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Hi,
Macbook Air 2017 A1466
EMC 3178
820-00165-A
SN: FVFVV003J1WM
Locked efi


please help me need urgent file to unlock and flash the efi chip
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Old 09-14-2021, 05:57 AM   #17
Vesko356
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Quote:
Originally Posted by ssio187dd View Post
Hi,
Macbook Air 2017 A1466
EMC 3178
820-00165-A
SN: FVFVV003J1WM
Locked efi


please help me need urgent file to unlock and flash the efi chip
ssio187dd is online now Report Post
Upload your bios backup here.
__________________
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Old 09-14-2021, 06:52 AM   #18
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Her is the link to download the Original backup

https://drive.google.com/file/d/10P4...w?usp=drivesdk
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Old 09-14-2021, 07:06 AM   #19
ssio187dd
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Hi vesko356 hoppely you can me help i hope so much thanks for you time bro
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Old 09-14-2021, 07:07 AM   #20
Vesko356
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Default Re: MacBook Air 2017 A1466 EMC 3178 820-00165-A No power

Quote:
Originally Posted by ssio187dd View Post
Her is the link to download the Original backup

https://drive.google.com/file/d/10P4...w?usp=drivesdk
Try:
Attached Files
File Type: zip MX25L6473E NEW.zip (4.48 MB, 97 views)
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