/e/OS 1.5.1-s-20221103231515-dev-FP3
After the “dirty” upgrade I tried to install the Exposure Notifications version of microG according to https://doc.e.foundation/support-topics/micro-g#steps-to-install-exposure-notifications-api-on-eos.
Installing it works, but “microG Services Core keeps stopping”.
Clearing cache and data, force-stopping, disabling, reinstalling, rebooting … no change 
.
Settings - System - MicroG can’t be opened.
microG Services Core 0.2.24.223616-271 … without “noen”, so it really is the newly installed EN-enabled one.