HU_ENTRYNAV after coding with BU down

[kampftux]

Hi @ll,

i need help. 
In my F46 i code with BU some options in my HU_ENTRYNAV. After pressing coding the display go black. 
HU do nothing.
Esys dont find HU_ENTRYNAV and KOMBI. ISTA say no communication to Headunit and Kombi. Also ISTA says MOST ist broken.

What can I do? Why BU coding brick my HU? Can anybody help me?

ENET and VXDIAG i have to code and prograiming.

[ek1978]

did you try battery reset for couple of minutes ?

[kampftux]

Yes for 5 minutes, no change.
Will leave them disconnected overnight. Hope that will help.

[ek1978]

I doubt it will make any difference , 5 minutes is more than enough .

[kampftux]

After a night without power, the HU started again this morning. It was coded with BU again, and everything is fine