Downgrade to 10.44 after upgrade to 11.28. Possible?

Hello guys,

It seems that upgrade to 11.xx versions was a mistake - a lot of folks are complaining of BT connectivity issues and battery drain (me included). I`d like to go back to version 10.44 as life was good back then and everything was working well. Does anyone know how downgrade from one official version to another could be done, since the approach to downgrade from Alpha or Beta does not work?