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[help]macbook air 820-01521...seems alive but it's dead! crazy!!

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phantom

Member
what do you mean?

i've tried to reactivate the mac: it goes from dfu to recovery, than it give me back error 4010! trackpad and battery connected. charger connected
 
Last edited:
2informaticos

2informaticos

Administrator
Staff member
I could only see 1.6A consumption; possibly with battery connected.

What is the current consumption without battery?
Can you post voltage on the coils?
 
2informaticos

2informaticos

Administrator
Staff member
Pressing power button 10s should turn it off.
Not sure if you can access pure DFU mode with keyboard only.
I do it using external switch method usually.
 
2informaticos

2informaticos

Administrator
Staff member
You've said it appears in Recovery, not DFU.
Or do you mean that it starts on Internet Recovery mode in fact?
 
P

phantom

Member
I’ve put it in dfu with keyboard, and I have tried to reaactive it with error 4010.

Now, When I simply Connect it with cable, i see it in Apple Configurator not in dfu But in Recovery
 
2informaticos

2informaticos

Administrator
Staff member
I told you how I proceed in such case.
The problem with your model is that you don't have dedicated pads to solder a switch for SOC_FORCE_DFU signal.
You need to solder tiny wires to corresponding points, on back of the MLB.
logi.wiki

DFU Mode Restore (Macs) - LogiWiki

We have Apple MacBook and iPhone Diode readings and general fault finding information compiled by the leaders in this area
logi.wiki logi.wiki

Isn't sure anyway if that will fix your problem.
 
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phantom

Member
You don’t understand: i don’t need Any switch because i can go to dfu mode without problem with keyboard and cable!!!
 
P

phantom

Member
phantom said:
I’ve put it in dfu with keyboard, and I have tried to reaactive it with error 4010.

Now, When I simply Connect it with cable, i see it in Apple Configurator not in dfu But in Recovery
Click to expand...
Yes because of this. After error 4010, When I simple Connect it to my MacBook, it is seen in “Recovery “ in Apple configurator
 
2informaticos

2informaticos

Administrator
Staff member
So, I explained you how to force it in pure DFU, not Recovery.

One week ago I had problems with an A1989 and took me various minutes to switch from Recovery to DFU.
It completed DFU restore after several tries (more than 10 times).
 
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phantom

Member
But I have no problem to switch to dfu mode…

Problem is that I have error 4010… I’ve tried like 5/6 Times…

I don’t know what to do now
 
2informaticos

2informaticos

Administrator
Staff member
If you start from Recovery, instead of DFU logo, that may cause the error.
So try again once AC2 shows DFU logo...
 
2informaticos

2informaticos

Administrator
Staff member
I had one A1932 on the desk yesterday.
It failed revive with error 4041.
However, restore was successfully completed from first atempt.

BTW, needed to switch from Recovery to DFU with external switch, in my case.
 

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