[Q] transferring a backup from Z1 Compact to Z3 Compact - Xperia Z3 Compact Q&A, Help & Troubleshooting

Hi, so here's my situation:
I had a z1 Compact with 4.4.4. (I believe the latest firmware before 5.0) which I sent in due to a defect.
Before doing so I made a backup using the built in Sony backup&restore app.
Instead of my z1c I got a new z3c with preinstalled Lollipop back. (Which is actually pretty awesome).
Unfortunatly I now cannot activate my old backup because it was made with 4.4 and not 5.0.
So my question is, would downgrading my z3c to 4.4.4, installing the backup from the old z1c and updating back to 5.1 via PC companion work, or is it a waste of time?
Or are there any easier alternatives like a different backup app which could activate the old backup?

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How to backup apps and system data?

This sounds like a noob question, but I am not that noob, I have been moding and doing all stuff since X10 , but this is the only thing I couldn't get my head around (I am not very expert though).
I used to use several apps, but nothing seems to be working with the new 4.4 update. I tried PCC but it always lags and never worked for me, I tried three different laptops (two of which are fairly new) but still didn't work. I tried carbon (helium) but didn't work either.
I have been using sony's old backup and restore app and it has been working fine until 4.4 comes out and it is saying that the backup isn't compatible to be restored (although I used it to backup and restore from different android version without any issues previously in the Z1 and old Xperia S).
I would like to hear suggestion on best way to backup from 4.3 to 4.4 WITHOUT root. I have a backup and can always downgrade to 4.3 and restore data then backup using any suggested app.
Thanks in advance

[Q] General understanding of flashing/unlocking

Hello everyone,
after my last smartphone died, a Razr I (flashed with CM11), I am a bit confused about the situation with my new phone, the z3c.
I hate the Stock ROM and would love to get my hands on the new CM12 (or similar).
But I read that flashing/unlocking destroys the DRMs and makes the camera worse (among others).
Is there a way to get a Custom ROM without that drawback?
With my current Version 23.0.A.2.98 there is not even a exploit to root the system and make a complete backup (with DRMs), if i recall correctly. Or am I wrong?
Should I wait for a exploit in Sonys Lollipop ROM (if there will be any) or do i lose the Sony-DRMs nevertheless by flashing a Custom ROM?
Thanks and sorry if the questions are a bit confused, I am fairly new to all of this!
You're a little late to the party, aren't you?! Please, use the search function and it takes you to root, backup of your TA partition and everything else...
now you can root your z3c without unlock the bootloader,just try it
Sent from my D5833 using XDA Free mobile app

Warbling call volume after updating to Lollipop

Hi all,
I am just wondering if anyone has come across this issue.
I recently updated my old Z1 to Lollipop (completely stock, no root or anything). I wiped the whole lot and flashed the Lollipop ftf. It's currently running the UK 14.6.A.0.368 firmware. Haven't updated it yet to the 216 firmware.
When I call this phone from any other, I can hear my daughter (whom I gave the phone to) but her voice warbles like she's talking underwater.
It is really strange because I had the exact same problem when I updated my wife's Z1 Compact to Lollipop too.
Both devices have locked bootloaders, no root, just clean wipe and flashed Lollipop ftf.
In the end I flashed KitKat back on the Z1C but my daughter really prefers LP over KK.
Any thoughts on this?

American Z1s c6916 development?

So I've just about had it with the leaky 5.0.2 lollipop firmware we got stuck with. Bootloader is hopelessly locked for no good reason meaning only Sony signed firmwares/kernels are flashable. A kind gentleman in one of the other subforums gave me instructions to install nuts recovery and that worked (I had rooted previously using kingroot).
He also packages up a flahable zip from a preroted c6903 5.1.1 official firmware (minus the modem files so my american tmo modem stayed in tact. I was trying to do a clean flash). Theoretically this should work right? Nope. Left my phone soft bricked over several attempts. I ended up getting the 4.4.4 ftf and flashing that back and honestly I'm happy with it.
But then I find out that my new vehicle in getting, which will support Android auto in a march update, requires lollipop or better. Son of biscuit eating bulldog!! I dont want to go back to the broken 5.0.2 firmware Sony and Tmo left us with. It was terrible.
Surely there has to be a way to trick the system into thinking we are flashing a stock 5.1.1 firmware to circumvent the locked bootloader right??? I was flashing customized ROMs back when my little brother had a Motorola Defy with a locked bootloader that all we needed to do was install recovery and "restore" a backup of said customized ROM and voila.
Any ideas?
another thought popped into my head. As far as I was aware, Xposed didnt work on our devices (well, the Z1s c6916 specifically). Can anyone confirm whether xposed works on the Z1s or not on 5.0.2? There is a module for xposed that claims to fix the memory leak issue so that could be another work around but im from preliminary reading its supposedly already included in stock sony firmware. Sure doesn't seem like it.
i just wish the bootloader could be unlocked (without consequences like causing focusing issues with the camera), and that existing Z1 roms could be reconfigured for the Z1s c6916...it would make things so much easier.
This is not a forum to ask questions !
Ask in Xperia Z1 forum because Z1s belongs there.
“Sent From MWE V8.0.0 On My Z3”

Xperia Z stuck with Android 5.1.1 - can I get back to 4.2.2?

I have a C6603 that I rooted into a custom KitKat 4.2.2 with the help of xda back in May 2014. I tried flashing Nougat 7.1.1 using Resurrection Remix OS but something went wrong - it didn't seem to get into recovery and became totally locked. I tried all sort of things but the only thing that worked was Sony's own Xperia Companion, which installed Lollipop 5.1.1. (horrible!) Now I have lost root and the bootloader is locked. The service test says it is unlockable. Sony have a website that describes an unlocking process which involves mega downloads on my PC. The instructions don't seem to relate to what I see on the screen, so I could not get anywhere with it.
Is there any way I can get back to where I was with 4.2.2? I still have all the downloads with which I installed it nearly 4 years ago. I did a full Titanium backup before I embarked on this folly. If I could get to 7.1.1, that would be nice - but that has lost me a lot of sleep already!
OK, let me put this another way.
Has anyone flashed an Xperia Z C6603 with Lollipop 5.1.1. using Sony's own Xperia Companion, and then unlocked the bootloader and rooted it? And if so, how did you do it?

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