@Linus67 Thanks very much. Will try it out…

@hlbkv I can't give you expert advice about your device unfortunately. Generally speaking from my limited experience (I have only one phone with UT, a Fairphone 5) when UT is installed the installer may have trouble running unless the device is set manually in fastboot. In these cases I have used 'sudo reboot fastboot' under UT to get to the desired fastboot mode. If UT don't start you may have success using the phone controls (IIRC starting while pressing Down (or Up ?), or using the device boot menu. Additionaly it's indeed necessary to specify the target (detection don't work). In short, your current state is cause of concern of course, but not yet of despair.

@vince.vs The path is. Not a (full) filesystem path Rather this is probably the left-overs of some app that shared status info to the greeter infographic, which you have since uninstalled.