System Update

[ShahinMiah]

Very much dislike the new system update. Want to go back to the original system as the new system update slows down the whole phone when im trying to load messages or other features.

[GreekXperiaSp]

You can try to downgrade your phone to 4.1.2...
Here is an article on how to do this..

http://talk.sonymobile.com/t5/Xperia-Z-ZL-ZR/How-to-manually-update-downgrade-root-2013-Xperias/td-p...

[AlexCustodia]

Why to downgrade to 4.1 ? This is not a resolution. SONY should find a resolution for all the issues which cames with this new android release.