Ultra Stamina modus gone after update yesterday

[Mayouisa]

Yesterday I updated with the latest version (got a message). But I'm not happy that the ultra Stamina option is gone. Why? Also the layout with the normal stamina modus is not nice, lots of black.

I have a Sony Xperia dual sim H8324. Is there an option to get the previous version back without having to reset to factory default settings?

[Yekollu]

Ultra Stamina mode is gone forever.... There is no option to get it unless you somehow can roll back to Android 9