For those who still haven't received the Marshmallow update

This is for Xperia users who haven't received the marshmallow update yet.

1. Install the PC Companion Software
2 Check for updates
3. If no updates are found, backup your data and do a software repair

This method worked for my Xperia M4 Aqua (E2333)

P.S Prior to performing a software repair, install Xperiafirm software and see whether an update is released to your phone by matching the CDA number.

from xda-developers http://ift.tt/2buGMxK
via IFTTT