andriod 4.3 camera & personalization problem xperia M dual

[sentiago_017]

I have recently updated my SONY XPERIA M Dual phone to Android 4.3, after that i am facing many problems

1. Camera Focus is very poor now + PICTURE QUALITY HAS DECREASED TREMENDOUSLY (MAIN PROBLEM)

2. Display is poor... I mean poor personalization ( Settings with WHITE background )
3. How can I get QUARTZ theme..? that was earlier present in 4.2.2
4. Changes made in Menu of 4.3 i.e. in 4.2.2 if you select 'most used apps' then it shows you apps that is frequently used +   remaining apps in the next page, where as in 4.3 update there is nothing like that.

Plz suggest a solution, Or How can I downgrade the phone to 4.2.2 (without root or hampering the warranty)

[sentiago_017]

Downgrade from 4.3 to 4.2.2 Xperia M Dual

Hi, I have upgraded my phone Xperia M Dual to 4.3.  But I found the battery draining fast and poor personalization.

Even though some spec and features are improved.

I think I would like to downgrade to 4.2.2

I have on "Stamina" and "Low Battery Mode", but seems cannot help.

May I know how to downgrade to 4.2.2 ? Or any suggestion?

Thanks

[blackmagic]

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

[Uliwooly]

1. re-install the latest update 

2. there's no way around it 

3. themes are not availalbe to all Xperias 

4. I don't understand this point