820-00923 Critical update loop

[rvanpruissen]

Things tried so far:
* Boot with wired connection
* Boot with touchbar, touchID and screen disconnected
* Full reinstall

Will boot into safe mode. Had some corrosion on the touchbar side of the logic board.

 

[2informaticos]

In safe mode touchbar driver is not loaded.
Check all traces and components in affected area.

 

[rvanpruissen]

Although the area had some corrosion, traces seem fine. Not sure how to test whether the circuitry for the touch bar actually works. Any suggestions?

 

[2informaticos]

Check dukefawk's thread about touchbar issues.
Also try the steps recommended in other threads...