820-01700-05 suddenly dead.

yair37

Member
20v 1.5A no water damage, put it on DFU mode but get error:

The operation couldn’t be completed. (AMRestoreErrorDomain error 9 - Failed to receive message from device, might be connection problem with USB host.) [AMRestoreErrorDomain – 0x9 (9)]
im using original thunderbolt 3 cable at left front.
maybe something with usb-c port?
 

2informaticos

Administrator
Staff member
If all USB-C ports switch to 20V, then should be other problem.

Be sure to use a second machine with the same macOS version as installed on T2 machine.
 

2informaticos

Administrator
Staff member
Likely T2 issue.
CPU is not needed to recognize the machine in Apple Configurator.
Many times need to run DFU beacuse secondary voltages are nor ptesent; CPU not running in such case.

Be sure all SLPS2R and AWAKE voltages are present.
 
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