Skip to main content

Fix Your Stuff

Right to Repair

Store

Help

Current version by: Claire Rapp (vote details) ,

Text:

There is some excepion: in my experience (I work for Mac repair shop) sometime VDH002 is not related directly to some disk fail.

This Year I solved two similar cases on MacBook Pro 15 retina A1398 2015 with VDH002 error and freezed apple during boot.

In my examples MacBook never boot: this is not an intermittent problem.

'''''But Apple tests give me VDH002 in both cases.'''''

I try to change SSD board without success and (very very strange) '''''I cannot boot from external device''''' (perfectly working USB bootable disk with macOS sierra).

Mmmmh..

So, I suppose there was some different problem, not disk related.

And I start my work….

After analysis on logic board (3.3v on L3700, SSD connector, change of U3740 / U3710 / U3711, voltages, ecc.), no problem found: logic board was in perfect condition (no oxyde, all core voltages OK, no shorts, etc.).

Finally - as last disperate attempt - I try to re-programming EFI bios (hardware programming of EEPROM chip contains EFI bios).

First attempt: write EFI bios normal version for this logic board. Result: No success. Same problem.

Second attempt: EFI bios clear-ME version. '''Result: success!! Both Macs boot perfecty.'''

''I lost a lot of time before my attempts on EFI chip…''

Finally,  customer tell me that his Mac fails after some recent Mojave system update…

so this confirm that problem - in my examples - occurs after some bad EFI update related to Intel ME, with some anomaly in peripherals management.

Recap: In my examples after Mojave system update I have VDH002 error and both internal/external boot was not possible.

I hope this will useful for someone.

Regards,

Carlo

Status:

deletedopen
deletedopen

Edit by: carlo strino ,

Text:

There is some excepion: in my experience (I work for Mac repair shop) sometime VDH002 is not related directly to some disk fail.

This Year I solved two similar cases on MacBook Pro 15 retina A1398 2015 with VDH002 error and freezed apple during boot.

In my examples MacBook never boot: this is not an intermittent problem.

'''''But Apple tests give me VDH002 in both cases.'''''

I try to change SSD board without success and (very very strange) '''''I cannot boot from external device''''' (perfectly working USB bootable disk with macOS sierra).

Mmmmh..

So, I suppose there was some different problem, not disk related.

And I start my work….

After analysis on logic board (3.3v on L3700, SSD connector, change of U3740 / U3710 / U3711, voltages, ecc.), no problem found: logic board was in perfect condition (no oxyde, all core voltages OK, no shorts, etc.).

Finally - as last disperate attempt - I try to re-programming EFI bios (hardware programming of EEPROM chip contains EFI bios).

First attempt: write EFI bios normal version for this logic board. Result: No success. Same problem.

Second attempt: EFI bios clear-ME version. '''Result: success!! Both Macs boot perfecty.'''

''I lost a lot of time before my attempts on EFI chip…''

Finally,  customer tell me that his Mac fails after some recent Mojave system update…

so this confirm that problem - in my examples - occurs after some bad EFI update related to Intel ME, with some anomaly in peripherals management.

Recap: In my examples after Mojave system update I have VDH002 error and both internal/external boot was not possible.

I hope this will useful for someone.

Regards,

Carlo

Status:

opendeleted
opendeleted

Edit by: carlo strino ,

Text:

There is some excepion: in my experience (I work for Mac repair shop) sometime VDH002 is not related directly to some disk fail.
 
This Year I solved two similar cases on MacBook Pro 15 retina A1398 2015 with VDH002 error and freezed apple during boot.
 
In my examples MacBook never boot: this is not an intermittent problem.
 
'''''But Apple tests give me VDH002 in both cases.'''''
 
I try to change SSD board without success and (very very strange) '''''I cannot boot from external device''''' (perfectly working USB bootable disk with macOS sierra).
 
Mmmmh..
 
So, I suppose there was some different problem, not disk related.
 
And I start my work….
 
After analysis on logic board (3.3v on L3700, SSD connector, change of U3740 / U3710 / U3711, voltages, ecc.), no problem found: logic board was in perfect condition (no oxyde, all core voltages OK, no shorts, etc.).
 
Finally - as last disperate attempt - I try to re-programming EFI bios (hardware programming of EEPROM chip contains EFI bios).
 
First attempt: write EFI bios normal version for this logic board. Result: No success. Same problem.
 
Second attempt: EFI bios clear-ME version. '''Result: success!! Both Macs boot perfecty.'''
 
''I lost a lot of time before my attempts on EFI chip…''
 
Finally, customer tell me that his Mac fails after some recent Mojave system update…
 
so this confirm that problem - in my examples - occurs after some bad EFI update related to Intel ME, with some anomaly in peripherals management.
so this confirm that problem - in my examples - occurs after some bad EFI update related to Intel ME, with some anomaly in peripherals management.
 
Recap: In my examples after Mojave system update I have VDH002 error and both internal/external boot was not possible.
 
I hope this will useful for someone.
 
Regards,
 
Carlo

Status:

open

Edit by: carlo strino ,

Text:

There is some excepion: in my experience (I work for Mac repair shop) sometime VDH002 is not related directly to some disk fail.
 
This Year I solved two similar cases on MacBook Pro 15 retina A1398 2015 with VDH002 error and freezed apple during boot.
 
In my examples MacBook never boot: this is not an intermittent problem.
 
'''''But Apple tests give me VDH002 in both cases.'''''
 
I try to change SSD board without success and (very very strange) '''''I cannot boot from external device''''' (perfectly working USB bootable disk with macOS sierra).
 
Mmmmh..
 
So, I suppose there was some different problem, not disk related.
 
And I start my work….
 
After analysis on logic board (3.3v on L3700, SSD connector, change of U3740 / U3710 / U3711, voltages, ecc.), no problem found: logic board was in perfect condition (no oxyde, all core voltages OK, no shorts, etc.).
 
Finally - as last disperate attempt - I try to re-programming EFI bios (hardware programming of EEPROM chip contains EFI bios).
 
First attempt: write EFI bios normal versioneversion for this logic board. Result: No success. Same problem.
First attempt: write EFI bios normal versioneversion for this logic board. Result: No success. Same problem.
 
Second attempt: EFI bios clear-ME version. '''Result: success!! Both Macs boot perfecty.'''
 
''I lost a lot of time before my attempts on EFI chip…''
 
Finally, customer tell me that his Mac fails after some recent Mojave system update…
 
so this confirm that problem occurs after some bad EFI update related to Intel ME, with some anomaly in peripherals management.
 
Recap: In my examples after Mojave system update I have VDH002 error and both internal/external boot was not possible.
 
I hope this will useful for someone.
 
Regards,
 
Carlo

Status:

open

Edit by: carlo strino ,

Text:

There is some excepion: in my experience (I work for Mac repair shop) sometime VDH002 is not related directly to some disk fail.
 
This Year I solved two similar cases on MacBook Pro 15 retina A1398 2015 with VDH002 error and freezed apple during first boot.
This Year I solved two similar cases on MacBook Pro 15 retina A1398 2015 with VDH002 error and freezed apple during first boot.
 
'''''Apple tests give me VDH002 in both cases.'''''In my examples MacBook never boot: this is not an intermittent problem.
'''''Apple tests give me VDH002 in both cases.'''''In my examples MacBook never boot: this is not an intermittent problem.
 
Try'''''But Apple tests give me VDH002 in both cases.'''''

I try
to change SSD board without success and (very very strange) '''''I cannot boot from external device''''' (perfectly working USB bootable disk with macOSmacOS sierra).
Try'''''But Apple tests give me VDH002 in both cases.'''''

I try
to change SSD board without success and (very very strange) '''''I cannot boot from external device''''' (perfectly working USB bootable disk with macOSmacOS sierra).
 
Mmmmh..
 
So, I suppose there was some different problem, not disk related.
 
And I start my work….
 
After analysis on logic board (3.3v on L3700, SSD connector, change of U3740 / U3710 / U3711, voltages, ecc.), no problem found: logic board was in perfect condition (no oxyde, all core voltages OK, no shorts, etc.).
 
Finally - as last disperate attempt - I try to re-programming EFI bios (hardware programming of EEPROM chip contains EFI bios).
 
First attempt: write EFI bios normal versione for this logic board. Result: No success. Same problem.
 
Second attempt: EFI bios clear-ME version. '''Result: success!! Both Macs boot perfecty.'''
 
''I lost a lot of time before my attempts on EFI chip…''
 
Finally, customer tell me that his Mac fails after some recent Mojave system update…
 
so this confirm that problem occurs after some bad EFI update related to Intel ME, with some anomaly in peripherals management.
 
Recap: In my examples after Mojave system update I have VDH002 error and both internal/external boot was not possible.
 
I hope this will useful for someone.
 
Regards,
 
Carlo

Status:

open

Original post by: carlo strino ,

Text:

There is some excepion: in my experience (I work for Mac repair shop) sometime VDH002 is not related directly to some disk fail.

This Year I solved two similar cases on MacBook Pro 15 retina A1398 2015 with VDH002 error and freezed apple during first boot.

'''''Apple tests give me VDH002 in both cases.'''''

Try to change SSD board without success and (very very strange) '''''I cannot boot from external device''''' (perfectly working USB bootable disk with macOS).

Mmmmh..

So, I suppose there was some different problem, not disk related.

And I start my work….

After analysis on logic board (3.3v on L3700, SSD connector, change of U3740 / U3710 / U3711, voltages, ecc.), no problem found: logic board was in perfect condition (no oxyde, all core voltages OK, no shorts, etc.).

Finally - as last disperate attempt - I try to re-programming EFI bios (hardware programming of EEPROM chip contains EFI bios).

First attempt: write EFI bios normal versione for this logic board. Result: No success. Same problem.

Second attempt: EFI bios clear-ME version. '''Result: success!! Both Macs boot perfecty.'''

''I lost a lot of time before my attempts on EFI chip…''

Finally,  customer tell me that his Mac fails after some recent Mojave system update…

so this confirm that problem occurs after some bad EFI update related to Intel ME, with some anomaly in peripherals management.

Recap: In my examples after Mojave system update I have VDH002 error and both internal/external boot was not possible.

I hope this will useful for someone.

Regards,

Carlo

Status:

open