Hi there, please can you tell me how I can revert back to Android Nougat on my Nokia 6. I recently did a system upgrade and as a result Android 8.1.0 (Oreo) was installed automatically. This has caused lots of problems - I don't get any notifications in any of my apps (SMS, email, messenger etc), the volume is automatically very loud even when I have reduced it, my contacts have been removed etc etc. This version of Android is clearly not compatible with this phone so I would like to remove it and revert back to Nougat which was working fine.
Any help would be much appreciated - thanks!