one of my Ha instances noticed supervisor stating an update to the Hassos software from 3.13 to 4 was available, so I clicked the update button.
result: a bricked Pi Sd-card. @pvizeli what could be at hand? Is there a way to revert this? cant reach the instance in any way, not even over samba or ssh
Very unlikely a software update bricked your Pi. Did you try already with a raspbian image ? If this works, your Pi is not bricked at all, just your OS.