16 inches M1 820-02382 Stuck on DFU MODE.

huzeafa

Member
Hello guys



Have got a 16 inches M1 Macbook Pro (820-02382) that is stuck in DFU MODE. The Logic board is spotless( very clean ) I went over the board and I couldn't find a short, PPDCIN is 5V PPBUS is 12.32V. PP3V3AON is present, an not sure exactly what method of troubleshooting to follow for an issue like this one, please help.
 

2informaticos

Administrator
Staff member
How the problem appeared?
Did you try DFU with both charger and battery connected?
You may have a problem with NAND chips...
 

huzeafa

Member
Thank you for responding to me. I tried with both battery and charger. When I got it from the client, connecting mag safe 3 has no LED.
 

huzeafa

Member
Yes, I tried a USB C cable, but it still 5V, with the same behavior, also when I compared diode mode measurements on the SSD rail with a known working board, it checks out.
 

2informaticos

Administrator
Staff member
DFU errors are not very clear; Apple did a "good" job.
All information is from experience of several technicians who posted on Internet.

A problem with a secondary power supply, should not impede you to complete DFU.
So M1 and NAND are the first suspects.

 
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