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Lost communication to head unit
I too was coding all type of stuff in expert mode and one thing I clicked was the operating version from 2018 that was marked aktive to 2021 and after coding the screen went blank and says no communication to head unit module. Can anyone help? I’ve tried resets, battery reset, holding knob, BimmerCode backup tried, took it to bmw to try to reflash the head unit with stock file but I think since I changed the version it’s not got a way to communicate with other modules.
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