I bought another (used) Xperia 10 II to replace my dead 10 II (due to HW fault) that had worked quite well for me, while awaiting sorting out the issues regarding 10 III.
However, the Xp 10 II that I bought had been updated to Android 12, (discovered that too late …), which leaves me with the following questions:
Is there any use at all to try to install SFOS on the 10 II phone in current state, as Jolla under “Required stock Android version” states “Android 11 (10 is ok)” for this phone, (and don’t open up for “12 is ok” as Jolla does for 10 III)?
Where can I find info on how to downgrade the phone from Android 12 to 11?
(3. Can I expect to be able to re-establish the data content on a phone running SF 4.5 from a back-up made under 4.4?)