This is too easy to stumble into!
I am a newbie on /e/ and still just experiment, and have another phone for important use, so it was not critical that i now messed it up.
I was using the q beta on my Fairphone 3.
Installed a couple apps using Apps, then saw it announced an update to the OS, did that rebooted OK.
Then i decided to try install all apps i may need. Found most in Apps, then used Aurora for the rest.
Aurora announced it found a lot of updates to installed apps, so i let it install all of them.
I was a bit impressed it could find an update to MicroG. “Whatever” i thought and let it update.
As i had installed so much, i thought it was good to reboot.
And it failed.
Then i rebooted it. Fail. Left it on a while, rebooted, and now I could log in see settings etc. After a couple minutes lying on the table, it rebooted…
Now i found this thread
But… How to downgrade MicroG to the real MicroG from /e/, and i probably need exactly that version…?
Probably easiest to just reinstall that version /e/ version. How?
As i have not much work put into it, i think I wil just wipe it (also data to be sure) and reinstall q beta using adb.
But the main issue here, i think is that /e/ should not allow any installer to change such core components! A popup telling why not. (possible to bypass for those who really need, like developers)