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Version actuelle par : oldturkey03 (détails du vote) ,

Titre:

How do I reprogram Mac BIOS chip exactly?

Texte:

Hi experts,

I have a 13” 2010 MacBook Pro.

This machine has green light on the MagSafe and will boot with chime as soon as I plug in MagSafe charger.

The screen stays black, but when I put in external monitor it will show the Apple logo and load about 1/3 and hang.

So far I disconnected the internal HDD and tried to boot of external HDD, same result, boot and hang.

I disconnected keyboard and booted with external keyboard, same.

Did the SMC reset with no response, PRAM reset same, no change.

I disconnected the battery and reconnected, still same. Disconnected machine's display, to eliminate possible short in there.

I’ve been told to: Try new BIOS, with clean ME. So I now have a  EEPROM BIOS USB Programmer CH341A + SOIC8 Clip + 1.8V Adapter + SOIC8 Adapter at hand. I’ve been told by logic board repair gurus with very little patience for “noobs” that I MUST remove SPI chip U6100 and reprogram it with external programmer.

I still do not know how exactly to reprogram U6100,  if removing the chip is necessary, since I do have the jumper wire and clip, and in general looking for a link to show me how to do this without frying my board. And finally what is meant with: Upload somewhere your BIOS backup. I hope this is not too much to ask??

=== Update (12/07/2018) ===

Oh, and I did run EFI ASD and it showed no errors…

=== Update (12/08/2018) ===

I had look under the logic board to see what I might find, and to check the power rails, as you suggested: So far I found amongst the regular chips:[br]

1 Potato chip in a bed of dust, [br]

​​​​​​PPBUS_G3H: 12.59V[br]

PP3V42_G3H: 3.49V[br]

PPVRTC_G3H: 3.33V[br]

PP5V_S5:  2.22 V on various test points, [br]

Then I nearly burned my finger on  L5801 which is on PP5V_S4_P18V5S5 (Booster for sensors) , which showed OL across the coil and short to ground on both sides.[br]

Could this be the culprit? And would replacing it might make a difference? While all this sounds very techy, I am still totally a “ noob”, but one with schematics and boardview….

Appareil:

MacBook Pro 13" Unibody Mid 2010

Statut:

open

Réponse acceptée:

534721

Modifié par : Jurgen ,

Titre:

How do I reprogram Mac BIOS chip exactly?

Texte:

Hi experts,
 
I have a 13” 2010 MacBook Pro.
 
This machine has green light on the MagSafe and will boot with chime as soon as I plug in MagSafe charger.
 
The screen stays black, but when I put in external monitor it will show the Apple logo and load about 1/3 and hang.
 
So far I disconnected the internal HDD and tried to boot of external HDD, same result, boot and hang.
 
I disconnected keyboard and booted with external keyboard, same.
 
Did the SMC reset with no response, PRAM reset same, no change.
 
I disconnected the battery and reconnected, still same. Disconnected machine's display, to eliminate possible short in there.
 
I’ve been told to: Try new BIOS, with clean ME. So I now have a EEPROM BIOS USB Programmer CH341A + SOIC8 Clip + 1.8V Adapter + SOIC8 Adapter at hand. I’ve been told by logic board repair gurus with very little patience for “noobs” that I MUST remove SPI chip U6100 and reprogram it with external programmer.
 
I still do not know how exactly to reprogram U6100, if removing the chip is necessary, since I do have the jumper wire and clip, and in general looking for a link to show me how to do this without frying my board. And finally what is meant with: Upload somewhere your BIOS backup. I hope this is not too much to ask??
 
=== Update (12/07/2018) ===
 
Oh, and I did run EFI ASD and it showed no errors…
 
=== Update (12/08/2018) ===
 
I had look under the logic board to see what I might find, and to check the power rails, as you suggested: So far I found amongst the regular chips:[br]
 
1 Potato chip in a bed of dust, [br]
 
​​​​​​PPBUS_G3H: 12.59V[br]
 
PP3V42_G3H: 3.49V[br]
 
PPVRTC_G3H: 3.33V[br]
 
PP5V_S5:  2.22 V on various test points, [br]
 
Then I nearly burned my finger on  L5801 which is on PP5V_S4_P18V5S5 (Booster for sensors) , which showed OL across the coil and short to ground on both sides.[br]
 
Could this be the culprit? And would replacing it might make a difference? While all this sounds very techy, I am still totally a “ noob”, but one with schematics and boardview….

Appareil:

MacBook Pro 13" Unibody Mid 2010

Statut:

open

Modifié par : Jurgen ,

Titre:

How do I reprogram Mac BIOS chip exactly?

Texte:

Hi experts,
 
I have a 13” 2010 MacBook Pro.
 
This machine has green light on the MagSafe and will boot with chime as soon as I plug in MagSafe charger.
 
The screen stays black, but when I put in external monitor it will show the Apple logo and load about 1/3 and hang.
 
So far I disconnected the internal HDD and tried to boot of external HDD, same result, boot and hang.
 
I disconnected keyboard and booted with external keyboard, same.
 
Did the SMC reset with no response, PRAM reset same, no change.
 
I disconnected the battery and reconnected, still same. Disconnected machine's display, to eliminate possible short in there.
 
I’ve been told to: Try new BIOS, with clean ME. So I now have a EEPROM BIOS USB Programmer CH341A + SOIC8 Clip + 1.8V Adapter + SOIC8 Adapter at hand. I’ve been told by logic board repair gurus with very little patience for “noobs” that I MUST remove SPI chip U6100 and reprogram it with external programmer.
 
I still do not know how exactly to reprogram U6100, if removing the chip is necessary, since I do have the jumper wire and clip, and in general looking for a link to show me how to do this without frying my board. And finally what is meant with: Upload somewhere your BIOS backup. I hope this is not too much to ask??
 
=== Update (12/07/2018) ===
Oh, and I did run EFI ASD and it showed no errors…

Appareil:

MacBook Pro 13" Unibody Mid 2010

Statut:

open

Modifié par : Dan ,

Titre:

How do I do a Biosreprogram Mac BIOS chip reprogramming exactly?
How do I do a Biosreprogram Mac BIOS chip reprogramming exactly?

Texte:

Hi experts,
 
I have a13”a 13” 2010 MBP : ThisMacBook Pro.

This
machine has green light on magthe MagSafe and will boot with chime as soon as I plug in magMagSafe charger. The

The
screen stays black, but when I put in external monitor it will show the Apple logo and load about 1/3 and hang. So

So
far I disconnected the internal HDD and tried to boot of external HDD, same result, boot and hang. I

I
disconnected keyboard and booted with external keyboard, same. Did

Did
the SMC reset with no response, PRAM reset same, no change. Battery I

I
disconnected the battery and reconnected, still same.Disconnectedsame. Disconnected machine's display, to eliminate possible short in there. I have

I’ve
been told to: Try new BIOS, with clean ME. So I now have a EEPROM BIOS USB Programmer CH341A + SOIC8 Clip + 1.8V Adapter + SOIC8 Adapter at hand. I haveI’ve been told by logic board repair gurus with very little patience for “ noobs”“noobs” that I MUST remove SPI chip U6100 and reprogram it with external programmer. I

I
still do not know how exactly to reprogram U6100, if removing the chip is necessary, since I do have the jumper wire and clip, and in general looking for a link to show me how to do this without frying my board….Andboard. And finally what is meant with : Uploadwith: Upload somewhere your BIOS backup. II hope this is not too much to ask??
I have a13”a 13” 2010 MBP : ThisMacBook Pro.

This
machine has green light on magthe MagSafe and will boot with chime as soon as I plug in magMagSafe charger. The

The
screen stays black, but when I put in external monitor it will show the Apple logo and load about 1/3 and hang. So

So
far I disconnected the internal HDD and tried to boot of external HDD, same result, boot and hang. I

I
disconnected keyboard and booted with external keyboard, same. Did

Did
the SMC reset with no response, PRAM reset same, no change. Battery I

I
disconnected the battery and reconnected, still same.Disconnectedsame. Disconnected machine's display, to eliminate possible short in there. I have

I’ve
been told to: Try new BIOS, with clean ME. So I now have a EEPROM BIOS USB Programmer CH341A + SOIC8 Clip + 1.8V Adapter + SOIC8 Adapter at hand. I haveI’ve been told by logic board repair gurus with very little patience for “ noobs”“noobs” that I MUST remove SPI chip U6100 and reprogram it with external programmer. I

I
still do not know how exactly to reprogram U6100, if removing the chip is necessary, since I do have the jumper wire and clip, and in general looking for a link to show me how to do this without frying my board….Andboard. And finally what is meant with : Uploadwith: Upload somewhere your BIOS backup. II hope this is not too much to ask??

Appareil:

MacBook Pro 13" Unibody Mid 2010
MacBook Pro 13" Unibody Mid 2010

Statut:

open

Contribution d'origine par : Jurgen ,

Titre:

How do I do a Bios chip reprogramming exactly?

Texte:

Hi experts,

I have a13” 2010 MBP : This machine has green light on mag and will boot with chime as soon as I plug in mag charger. The screen stays black, but when I put in external monitor it will show logo and load about 1/3 and hang. So far I disconnected the internal HDD and tried to boot of external HDD, same result, boot and hang. I disconnected keyboard and booted with external keyboard, same. Did the SMC reset with no response, PRAM reset same, no change. Battery I disconnected and reconnected, still same.Disconnected machine's display, to eliminate possible short in there. I have been told to: Try new BIOS, with clean ME. So I now have a  EEPROM BIOS USB Programmer CH341A + SOIC8 Clip + 1.8V Adapter + SOIC8 Adapter at hand. I have been told by logic board repair gurus with very little patience for “ noobs” that I MUST remove SPI chip U6100 and reprogram it with external programmer.  I still do not know how exactly to reprogram U6100,  if removing the chip is necessary, since I do have the jumper wire and clip, and in general looking for a link to show me how to do this without frying my board….And finally what is meant with :  Upload somewhere your BIOS backup.  I hope this is not too much to ask??

Appareil:

MacBook Pro

Statut:

open