Sony xperia x. Problems after updating

[Alexander1991s]

After updating noticeable lagging  in a menu, what was not on 7.0. And similarly the adaptive level of illumination works not correctly. 

Please fix it, Sony

[Uliwooly]

@Alexander1991s

This is what I would do, repair the phone with XC and check again.

Xperia Companion (XC)

Software Repair Guide

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355