Database Develop

[Q] Disadvantages of rooting

I'm considering to root my latest 2.254 C5303. Here and there on forums somebody mentioned that if you root, something stops working, etc.
After root:
- do all functions work as before root?
- if I delete some app from /system, can i flash with standard PC companion the future ftf package?
- update via OTA?
After BL unlock:
- I loose Bravia engine
- GPS gets worse?
- .... does not work ?
- with backup of TA, i can get it back to "stock" with Bravia engine (for repair..)

Rooting will not affect phone and yes you can still use PC companion or sus to restore phone off you delete files from system. Or better still once you root install clock work mod or cwm for short then you can backup your system and files data etc face to SD card and then restore this of you mess something up.
Yes boot loader unlock will lose your DRM keys and bravia 2 engine, if you back up ta then unlock your boot loader you will have keys if you need to relock and restore keys.
Unlocking boot loader will void your warranty.
But once relocked and ta and DRM restored Sony centre will repair if needed.
Sent from my C5303 using xda premium

[Q] Couple of questions regarding unlocking and DRM keys

Hi,
I have some questions:
1- I'm completely confused as how custom ROMs like eXistenz have xReality engine or Bravia Engine and they are supposed to be flashed on unlocked boot loaders, I thought unlocking would break the functionality since it destroys the DRM keys.
2- I rooted my device when I was on 4.2.2, now I upgraded my phone to 4.3 official and I lost the root, is it possible to root it again with unlocking and then relock it again without loosing root, I did not install the custom recoveries when I had the chance, stupid me but I have backed up my TA partition at least
Any help would be appreciated, thanks.

Bump

Have a look in development section, there are a few rooting guides for 4.3. You will need to sort out recovery first though.
With the Bravia question, it only works if your phone bootloader isn't unlocked.
Xperia Z

Thank you but I did not get my answer as how custom roms are using bravia or xreality and how to relock without loosing root

1. Existenz can be flashed on a locked bootloader, therefore BE2 still works.
2. Yes -
- Unlock your bootloader (remember to backup your data and internal SD as both will be wiped during the process).
- Flash DooMLoRD's advanced stock kernel.
- Flash a superuser zip (I use the SuperSu zip direct from Chainfire's site).
- Flash a stock kernel.
- Restore TA backup.
You will then be on 4.3 with locked bootloader and DRM keys intact.
Sent from my C6603 using Tapatalk

Thank you for your detailed answer, much appreciated pal

You're welcome.
Sent from my C6603 using Tapatalk

[Q] urgent help!! regarding 4.3 root and bootloader

I had already rooted my z1 when on 4.2.2... But now the 4.3 updates removed the root... Unlocking bootloader ia only option as far as I know.. So I want to ask is..
A) if I unlock bootloader will I loose xreality engine? If yes how do I save that from not happening..
B) is there a "stable" way to install CWM recovery amd not unlock bootloader..? Is there is.. Will mybstock features be affected such as loss of xreality n DRM keys?
C) is there a way to unlock bootloader without looaing DRM keys? If so again will I loose the z1 features?
Please help..

axaitechie said:
I had already rooted my z1 when on 4.2.2... But now the 4.3 updates removed the root... Unlocking bootloader ia only option as far as I know.. So I want to ask is..
A) if I unlock bootloader will I loose xreality engine? If yes how do I save that from not happening.
B) is there a "stable" way to install CWM recovery amd not unlock bootloader..? Is there is.. Will mybstock features be affected such as loss of xreality n DRM keys?
C) is there a way to unlock bootloader without looaing DRM keys? If so again will I loose the z1 features?
Please help..
Click to expand...
Click to collapse
A) if you unlock bootloader you WILL loose xreality. To get it back restore backed up TA partition. You can't have unlocked bootloader and xreality at the same time. Here is a video on how to get full root on 4.3: http://youtu.be/1aq9YTlfCgc
B) Yes you can install the recovery on any rooted Xperia Z1. You don't need an unlocked bootloader to be rooted.
Here are some more explanations if you are confused http://youtu.be/l78p_2ShPS0
C) You will always loose DRM keys when unlocking but you can back them up before unlocking to restore them later

Out there are 2 ways only how to root your Z1, both are for Locked Bootlader. 1 best way is here step by step, page 2, Post #16 http://forum.xda-developers.com/show...2588331&page=2 or NUT method here http://forum.xda-developers.com/show....php?t=2572988
..and what @shem2409 said it's all right.

[Q] I have some question about backup TA on Z1 locked bootloader 4.3

Hello to everyone on Xda! I'm a C6903 user with 4.3 on 14.2.A.1.136,
I have a problem, i want to backup TA before Unlock bootloader, but for backup i need root, there is a possible way to backup without rooting and after unlocking bootloader?
I need this for a trusted unlock! Thank's to all!!

You can't Backup TA without Root and you can't Backup TA after unlock bootloader because after Unlock you will lost your DRM Keys forever with warranty.
You can Root without Unlock Bootloader so there is no problem at all. Use NUT method.

eclyptos said:
You can't Backup TA without Root and you can't Backup TA after unlock bootloader because after Unlock you will lost your DRM Keys forever with warranty.
You can Root without Unlock Bootloader so there is no problem at all. Use NUT method.
Click to expand...
Click to collapse
Thank you for the answer, sorry but i'm a n00b with xperia world, i have bought Z1 5 days ago and i don't want to lose warrantly!
What is NUT method? The recovery?
I have 4.3 updated to 14.2.A.1.136 and i don't have see rooting method without unlock bootloader
Sorry for the bad English..

Wolter91 said:
What is NUT method? The recovery?.
Click to expand...
Click to collapse
This is the NUT method, you have to downgrade with Flashtool to .534 provided by NUT to not lose IMEI, Root with Bin4ry Applicartion, then follow the instruction to update to .290. When you will have the .290 Rooted then you are ready to Update to .136 with the same method HERE
Watch the Tutorial Video How To.
This is all for Locked Bootlader.

Downgrade to 534. Root & backup ta. Flash stock 136 and unlock bootloader. Then flash stock adv kernel by doomlord. Install Update superSU and busybox. You will have root 136. That's it.
Sent from my C6903 using XDA Premium 4 mobile app

[Q] How to Root/UB/Backup TA with 4.3

Hi guys,
I'm kinda desperate right now. I am using 4.3 with 12.1.A.0.266 firmware.
My aim is to install CWM. For this I need an unlocked Bootloader and Root.
But all tutorials I could find are kinda contradicting themselves.
To root I need UB.
To unlock Bootloader in need to Backup TA partition.
And to backup TA partition I need root.
The tools from doomlord all require the old firmware, but silly me has already updated.
Is there any way to unlock Bootloader without root for backuping TA partition OR root with locked bootloader?
Any help is appreciated

Im afraid there isnt any root method for locked bootloader, so You must flash 4.1 using flashtool, root 4.1, backup TA, flash 4.3, unlock BL, root 4.3 and relock BL by restoring TA. The whole process just sounds hard and its complicated but follow those steps and itll be fine
Cheers
Sent from my C5303 using XDA Premium 4 mobile app

teddy74eva said:
You must flash 4.1 using flashtool, root 4.1, backup TA, flash 4.3, unlock BL, root 4.3 and relock BL by restoring TA.
Click to expand...
Click to collapse
When updating to 4.3 I lose root, dont I? So there must be a way to unlock BL with no root? I think then i would lose my Drm keys, thats why i backuped them on 4.1, didn't I? And i surely can use the backup of TA i made in 4.1 for version 4.3?
Thank you for your help already!

Same, Bro
ShotingCox said:
Hi guys,
I'm kinda desperate right now. I am using 4.3 with 12.1.A.0.266 firmware.
My aim is to install CWM. For this I need an unlocked Bootloader and Root.
But all tutorials I could find are kinda contradicting themselves.
To root I need UB.
To unlock Bootloader in need to Backup TA partition.
And to backup TA partition I need root.
The tools from doomlord all require the old firmware, but silly me has already updated.
Is there any way to unlock Bootloader without root for backuping TA partition OR root with locked bootloader?
Any help is appreciated
Click to expand...
Click to collapse
I got same dilemma. Worstly , I am already unlock bootloader without doing Backup TA . Can I relock bootloader,do the Backup TA again??

kclement said:
I got same dilemma. Worstly , I am already unlock bootloader without doing Backup TA . Can I relock bootloader,do the Backup TA again??
Click to expand...
Click to collapse
i am afraid you cant get ur DRM keys back as you didn't took a TA backup before unlocking bootloader.. :