Just updated my Xperia 10 II from 4.1 with no issue in the update process. No major issue so far.
Update 2021-09-02:
- problem: Contacts in People no longer show pictures. The only way to add picture is to take a photo…
- problem: Ordinary timer alarm did not play, but pops-up every minute or so (restarting phone solved the problem temporarily
- problem: after 15 h uptime, phone blocks from time-to time (GUI freeze)
- some application appear unstable: Fernschriber, Pure maps)