Doubts Regarding Xperia Z3 Dual Downgrade, Enter Recovery

[Ali90]

Hi, I upgraded my Z3 dual using PC companian and I am getting worst of worst battery life which lasts hardly 8 hours with a average 2 hours on screen by using only one sim....Don't recommend me to turn off my mobile data, live wallpaper etc etc...I don't need two days of back up as advertise, I only need atleast one day...

And my question is can I downgrade it to KitKat without rooting my phone??? When I used Sony Emma software to connect my phone with PC it showed that your phone is locked and to enable the functions you have to unlock your phone....

And the other doubt is how can I enter into recovery mode to hard reset my phone??? I tried with a lot of button combinations and all are resulted in normal boot up...

And tell me any othere ways to regain my battery back up without downgrading if there is any ( even I don't think so ) 

I appreciate your valuable suggestions....Thanks

[Thommo · Accepted solution]

Yes you can downgrade without rooting see here for a guide on how to create your own firmware and how to manually flash your phone but you may need to find the firmware from another country if available or search XDA

Sony EMMA as per the instructions says that's it for use with compatible phone and only for phones that have an unlocked Bootloader

To finish there is no magic button combo to enter Recovery mode as Xperia devices don't have one unless you have rooted and have installed a custom recovery