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I have A2141 with water damage (only recovery of data is needed)

D

Dimitrije

New member
820-01700 board that had small liquid damage on U9080, now all voltage rails are present but laptop is stuck in DFU mod.
Resistance of NAND is normal, i suspect that FW part that is in nand got corrupted when liquid got to the board, battery is charging.
Only valiuble thing is data from the board, i could do RESTORE option but than i got nothing.
When i try using REVIVE option i get error armrestoreerrordomain - 0x6 (6).
Is it posable to save data?
 
2informaticos

2informaticos

Administrator
Staff member
First of all, welcome to the forum!

If NANDs have been affected somehow by the liquid spill, data is lost.

What is actual diode mode reading (red probe on ground) at L9080?
Do you get all SSD and G3S voltages?
 
D

Dimitrije

New member
Voltages are
5VG3S_VFB1_RR - 5.12V
P1V8G3S_EN - 1.80V
PP1V8_G3S - 1.80V
PP3V3_G3H_SSD0_SNS - 3.40V

P2V5_SW1_TPS62180_SSD0 - 2.52V
P0V9_LX0_SSD1 - 0.9V
P0V9_LX1_SSD1 - 0.9V
P1V8_LX0_SSD1 1.80V

Resistances are
L9080 - 0.280 on diode mode with red probe on ground (not shorted) after turning on board and off its 0.063 in diode mode
same on the other ssd side.
 
2informaticos

2informaticos

Administrator
Staff member
ALWAYS check diode mode, or ohm scale ONLY with power removed (charger and battery)!

When you go to DFU mode, do you get DFU, or Recovery logo?
 
D

Dimitrije

New member
2informaticos said:
ALWAYS check diode mode, or ohm scale ONLY with power removed (charger and battery)!

When you go to DFU mode, do you get DFU, or Recovery logo?
Click to expand...
I turned off laptop before checking again in diode mode, battery and charger, i get recovery mode and than i get DFU after holding keys.
I ment to say after powering laptop on and off and then i tested
 
Last edited:
2informaticos

2informaticos

Administrator
Staff member
Do you get correct voltages on the other SSD side?

An authorized Apple service shop can try to recover the data in DFU mode.
Connection with Apple server is required.

BTW, write directly into bottom reply box, instead of clicking Reply button.
I don't see any reason to quote an entire post, visible few centimeters above.
Please, maintain forum aesthetic...
 
D

Dimitrije

New member
Yes i do get correct voltages on both sides of the SSD-s.
Okay, i will maintain forum aesthetics.
Can you elaborate please?
 
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2informaticos

2informaticos

Administrator
Staff member
T2 machines don't need working CPU to access SSD.
SSD is directly connected to T2.
So internal data can (possibly) be retrieved in DFU mode; but ONLY by an authorized Apple service center.
 
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