Battery problem - new software?

[dr]

before few days i updated new software build number 15.3.A.0.2.6 android version 4.2.2, i found new problem after updated my batttery drops in short time please how can i get old version which was before this ?

[Uliwooly]

1. check the forum for other threads on the same topic

2. check this 2 threads

http://talk.sonymobile.com/t5/FAQ/Battery-time-and-enhancement-features/m-p/347874#U347874

http://talk.sonymobile.com/t5/FAQ/Facing-problems-with-abnormal-battery-and-shutdown/m-p/320375#U320...