[Q] Z3 dual D6633 problem with update OTA !!!!! (could not verify) topic

I have xperia Z3 dual D6633 with build number 23.0.F.1.82 and rooted it with giefroot_v3 then installed Z3-lockeddualrecovery2.8.2 without unlock bootloader my bootloader still locked.
I want to update the system via ota update center to version 23.0.1.F.0.96 after finish download it give me this message (could not verify). I tried a lot of times and tried factory rest same problem (could not verify) why?? :(
I want update system without loosing root and recovery and without flash it via flashtool I want just update it via Ota to the newer system 23.0.1.F.0.96 with size(134.7 MB only)..... :crying:
thank you for all...

[Q] Could you tell me if CM12 is equal to CM11 in features, stability, battery, etc? topic

I was keeping on Android 4.4.4 because of xposed. Now that xposed in on alpha for L it is time to switch.

Could you tell me if CM12 is equal to CM11 in features, stability, battery, etc?
Are there call issues? Are they solved? When were they solved? and how?

Which Kernel is suggested?
I was very pleased about AK.500 or the whole AK kernel series.

[Q] Maybe you guys could help me fix my Nexus 5 topic

Hey guys.
So, I'm not using my Nexus 5 anymore, but I would like to give a shot to fixing it.
It fell down the toilet so the buttons on the side are wrecked. The screen is not broken however.
If I plug it into the charger, it displays a red LED. If I press the power button it vibrates, but displays nothing.

Do you guys have any idea of what might cause this problem? Is the screen the problem?
Thanks.

[Q] Help what are some good books i could buy for android studio? topic

Help what are some good books i could buy for android studio so i could understand how it works and how to write code for java. please leave a link of a good programming book to get started with