a1708 emc 2978 820-00875-01 bios

[AlexVG]

Re: a1708 emc 2978 820-00875-01 bios

Hi,
I have A1708 EMC 3164 and main 820-00875-A
(I guess this main is from A1708 EMC 3164. It came from another service).

SPI was not soldered. And Main have had other traces of soldering and lack of elements.
I restored everything.
All powers start exclude backside lights. Probably it is SPI issue.

I used SPI dump from topic number two.
I am watching SPI request and answer every 6 seconds.
It is not correctly.
(By Mistake I have used BIOS from 820-00840-A main before - I saw only one SPI request)
So, can you help me to give correct BIOS for 820-00875-A
Is it important to use BIOS for 820-00875-A? Because I Used from 820-00875-1.
Can I download 820-00875-1 instead of 820-00875-A?

Thank you advance!

[SMDFlea]

Re: a1708 emc 2978 820-00875-01 bios

Hi,
I have A1708 EMC 3164 and main 820-00875-A
(I guess this main is from A1708 EMC 3164. It came from another service).

Post the serial number.

.

[AlexVG]

Re: a1708 emc 2978 820-00875-01 bios

They are different:

From the bottom cover
C02VLAEGHV22

From the SPI
C02T836XGY25

[peste]

Re: a1708 emc 2978 820-00875-01 bios

They are different:

From the bottom cover
C02VLAEGHV22

From the SPI
C02T836XGY25

try...

[AlexVG]

Re: a1708 emc 2978 820-00875-01 bios

Thank you so much!
You even put my serial number, you are very generous!
But importunately new BIOS gave my nothing.
Probably it has another kind of problem.

[AlexVG]

Re: a1708 emc 2978 820-00875-01 bios

Hi, I checked most of signals.
Missing CPU_PROCHOT.
The line is in good conditions. CPU full it down.

[MtapeK]

i need help with my Bios,
the Mac came in without displaying and as alwas i tested and could Get Most of the _S0 voltages.
noow i tried to write another Bios Bin from this Forum and it displayed but the Serial number
attached is the OLD BACKEDUP bios file.

model a1708 EMC 2978
board number 820-00875-01
Serial number C17SH3MKGVC1

[elbtonet]

Hi friend please help me with my dump .. power but no display.. all reset tryed but no result
SN
FVFX73PDHV27

[peste]

Hi friend please help me with my dump .. power but no display.. all reset tryed but no result
SN
FVFX73PDHV27

post motherboard model,etc.

[elbtonet]

A1708 EMC 3164
model 820-00875-01

[peste]

A1708 EMC 3164
model 820-00875-01

try..