Hello
I successfully rooted my Xperia P with locked bootloader while upgrading to ICS...
I will be very grateful if someone know how can we install CWM on our devices with locked bootloader?
I tried X-parts and RecoverX but without success
Thank you very much in advance!
Best regards
Hi, how did you root your phone with LB please ?
Thx.
Delnic said:
Hi, how did you root your phone with LB please ?
Thx.
Click to expand...
Click to collapse
Just fallow instructions in this post:
http://forum.xda-developers.com/showpost.php?p=29752123&postcount=530
and read my notes in post 568: http://forum.xda-developers.com/showpost.php?p=30402401&postcount=568
As i have already upgrade my phone with ICS, do you know a way to go back on GB ?
i can find a ftf file with another kernel than ICS...
Thx.
seky0405 said:
Hello
I successfully rooted my Xperia P with locked bootloader while upgrading to ICS...
I will be very grateful if someone know how can we install CWM on our devices with locked bootloader?
I tried X-parts and RecoverX but without success
Thank you very much in advance!
Best regards
Click to expand...
Click to collapse
+1
Envoyé depuis mon LT22i avec Tapatalk
I am not sure but try this app
https://play.google.com/store/apps/details?id=com.pvy.CWMinstaler&hl=en
Yesterday unlocked bootloader! Where was this topic before?
DavidMKD said:
I am not sure but try this app
https://play.google.com/store/apps/details?id=com.pvy.CWMinstaler&hl=en
Click to expand...
Click to collapse
X-parts said that this phone is not supported :crying:
Maybe someone know is it posiible to do it with Root explorer by manually copying files and changing permissions?
dimon2242 said:
Yesterday unlocked bootloader! Where was this topic before?
Click to expand...
Click to collapse
As a senior member, i think you might also know that Relocking bootloader is possible for Xperia P. :good:
tej911 said:
As a senior member, i think you might also know that Relocking bootloader is possible for Xperia P. :good:
Click to expand...
Click to collapse
This still doesn't help on ppl who can't unlock it. Don't get me wrong, I just don't want to unlock it. I'm waiting for a solution like the X10 had (with "bypassing" a kernel and so. I still have a .apk file from Z which gives a recovery0.2 but that's not CWM ofc)
Does you tray CWM installer from Xperia S developement forum?
http://forum.xda-developers.com/showthread.php?t=1756346
I didn't try it because I'm not sure is it compatible with Xperia P devices...
I post a question in http://forum.xda-developers.com/showthread.php?t=1841613 thread where I asked for CWM files. We can them easily past in wright directories as we have root rights now
Lietotajs said:
Does you tray CWM installer from Xperia S developement forum?
http://forum.xda-developers.com/showthread.php?t=1756346
Click to expand...
Click to collapse
I tried it, it does not work.
I have a SIM-locked phone, CWM would be essential.
Strange, I try to root my phone and stuck after step2.bat - phone not boot (stuck on fluid xperia screen)!
Lietotajs said:
Strange, I try to root my phone and stuck after step2.bat - phone not boot (stuck on fluid xperia screen)!
Click to expand...
Click to collapse
Do full wipe in CWM
Sent from my ST25i using xda app-developers app
XperianPro said:
Do full wipe in CWM
Sent from my ST25i using xda app-developers app
Click to expand...
Click to collapse
how can you do a full wipe in CWM if you don't have root access?
im also having trouble with this procedure, are there anything i need to have or do before following those steps?
Do i locate the bat 1 file in command prompt as im having no success
my p is new so i don't nothing to it besides update the firmware but its still on GB
any help would be greatful
okokies said:
how can you do a full wipe in CWM if you don't have root access?
im also having trouble with this procedure, are there anything i need to have or do before following those steps?
Do i locate the bat 1 file in command prompt as im having no success
my p is new so i don't nothing to it besides update the firmware but its still on GB
any help would be greatful
Click to expand...
Click to collapse
you can do a full wipe :
call *#*#7378423#*#*
Customisation Setting → reset customisation
or
fastboot.exe -w
or
use pc companion to repair device (this will also lead to full reset of the device)
okokies said:
how can you do a full wipe in CWM if you don't have root access?
im also having trouble with this procedure, are there anything i need to have or do before following those steps?
Do i locate the bat 1 file in command prompt as im having no success
my p is new so i don't nothing to it besides update the firmware but its still on GB
any help would be greatful
Click to expand...
Click to collapse
You can do a full wipe by manual. There is an option to do that on Setting.
I have a boot loader locked xperia p i want to root it without unlocking boot loader(as it voids the warranty) also my device is sim unlocked....so i want to know that will i be able to root my device with this method???and after rooting will i be able to install CMW in my device????if yes then can someone guide through the process of installing CMW?????
dhansiddh said:
I have a boot loader locked xperia p i want to root it without unlocking boot loader(as it voids the warranty) also my device is sim unlocked....so i want to know that will i be able to root my device with this method???and after rooting will i be able to install CMW in my device????if yes then can someone guide through the process of installing CMW?????
Click to expand...
Click to collapse
Root by toolkit for Xperia S, works fine on Xperia P!
Related
hi i am a new user of xperia neo.....in my device bootloader unlock allowed says NO...now can anyone help me to unlock my bootloader ???? plzz someone help me ,which method i can use to unlock bootloader....and if my bootloader is lock can i use recovery mode on my device ????
Please read the stickies before posting.
Boot loader unlock no= no fast boot so you cannot flash custom kernels, but you can flash all stock ones including ics.
You can still root and install cwm, this will allow you to flash any rom for locked boot loader.
Sent from my Xperia Neo V using Tapatalk
Minhazxda said:
hi i am a new user of xperia neo.....in my device bootloader unlock allowed says NO...now can anyone help me to unlock my bootloader ???? plzz someone help me ,which method i can use to unlock bootloader....and if my bootloader is lock can i use recovery mode on my device ????
Click to expand...
Click to collapse
You can unlock your booloader but you will have to pay for the service, pm Jinx13 about it
i have rooted my phone & installed cwm recovery...but when i reboot my phone,it hanged on sony ericsson logo screen...and i have to open my battery to restart my phone...plzzz explain how gain recovery mode on my device..
Minhazxda said:
i have rooted my phone & installed cwm recovery...but when i reboot my phone,it hanged on sony ericsson logo screen...and i have to open my battery to restart my phone...plzzz explain how gain recovery mode on my device..
Click to expand...
Click to collapse
How did you installed CWM?
i have used the first method of this thread.....http://forum.xda-developers.com/showthread.php?t=1364509
http://forum.xda-developers.com/showthread.php?p=74
Follow this one instead, you missed an important bit of info on the other, only use on fw 2.3.3
Sent from my MT11i using Tapatalk
your post said...."No thread specified. If you followed a valid link, please notify the administrator"...plzzz give me a valid thread
and bro my android version is 2.3.4 & build number is 4.0.2.A.0.42...how can i downgrade my android version to 2.3.3 ????
Actually no you can just read the stickies, you are going to murder your phone, you cannot downgrade to 2.3.3 you'll get the 0% battery issue.
Why people start messing with things without research I don't know.
Do your self a favor and read the stickies before you try anything else you will find the right way to root
Sent from my MT11i using Tapatalk
mpiekp said:
you cannot downgrade to 2.3.3 you'll get the 0% battery issue.
Click to expand...
Click to collapse
I think that's only when going down to 2.3.2. Not sure, but I think.
Madfysh said:
I think that's only when going down to 2.3.2. Not sure, but I think.
Click to expand...
Click to collapse
Either way he doesn't need to too root
Sent from my MT11i using Tapatalk
Okay, so i have been attempting to root my xperia u since about december, i cannot root it, ive tried one click root for xperia u, it said it worked but as soon as i tried to install a rom with rom manager it said no root access, i have tried a few other 'one click apps' they all say they work yet i can't do anything as i could on root, i have had a rooted galaxy ace, so i can if its rooted or not (well i think so)
I do not have unlocked bootloader, i dont know how to unlock it
It would be well appreciated if someone could tell me how to root and or unlock bootloader, or just tell me and alternate way to install the galaxy s3 jb rom
Thanks in advance
c_orza24 said:
Okay, so i have been attempting to root my xperia u since about december, i cannot root it, ive tried one click root for xperia u, it said it worked but as soon as i tried to install a rom with rom manager it said no root access, i have tried a few other 'one click apps' they all say they work yet i can't do anything as i could on root, i have had a rooted galaxy ace, so i can if its rooted or not (well i think so)
I do not have unlocked bootloader, i dont know how to unlock it
It would be well appreciated if someone could tell me how to root and or unlock bootloader, or just tell me and alternate way to install the galaxy s3 jb rom
Thanks in advance
Click to expand...
Click to collapse
To unlock the bootloader go to sony site there u can unlock it
I m not earning money by helping you so if u think I gave my time so pls press thanx button
sonurockspunk said:
To unlock the bootloader go to sony site there u can unlock it
I m not earning money by helping you so if u think I gave my time so pls press thanx button
Click to expand...
Click to collapse
Cheers, ill try that
I can't do that, reason being is that when i type in the number to see if bootloader is unlockable it says no, is there any other way that could unlock it, or just install the rom?
sorry to hijack the thread - im a little way ahead - bootloader unlock - but cant get a root hack to work....i did follow one that said to download a .js file - but in the readme it says to run a "runme.bat" file which doesnt exist....so, im stuck as well - mines a 2011 version with mtp - i did try the flashtool but it looks like that only works with pre mtp devices....
Just to add - ive found the thread for rooting. download the file with the runme.bat in there. Ran that as admin and it all gives the appearance of working, reboots the phone - command prompt says everything has worked but theres no superuser icon installed so i guess it hasnt.
c_orza24 said:
Cheers, ill try that
I can't do that, reason being is that when i type in the number to see if bootloader is unlockable it says no, is there any other way that could unlock it, or just install the rom?
Click to expand...
Click to collapse
Then I guess u will have to unlock it by paid method
I m not earning money by helping you so if u think I gave my time so pls press thanx button
There is alot of threads! It's really easy and it can work for locked downloader! There is a sticky on the forum for it where you can get the firmware needed.
Just download the ICS. B.54 ftf
And the C.1.0 Ftf once flashed the B.54
Flash the C.0.1 and root the reflash the B.54 but only the firmware and don't do the wipes! There is a more explaind method on the sticky
Sent from my ST25i using xda premium
Hi,
I am on xp jb stock rom and unlocked bootloader and installed a custom kernel with root and CMW..But now I want to relock it..Is there any way to relock it and keep Root +CMW
am2222 said:
Hi,
I am on xp jb stock rom and unlocked bootloader and installed a custom kernel with root and CMW..But now I want to relock it..Is there any way to relock it and keep Root +CMW
Click to expand...
Click to collapse
Quick Question : Why would you want to do that?
Answer to the question : Yes You can do it by Flashing A Relock ftf file for your device.
But Locked bootloader will stop the CWM from functioning,
Might leave your device soft brick.
Root has nothing much to do with boot loader lock or unlock. So boot will be present
I hope you find this information useful.
Advice : Do not attempt to lock it with root and CWM.
Correct procedure is to
1. Flash a CLEAN STOCK
and then
2. Flash ReLock
Greetings,
Dwarkesh
dwarkesh2492 said:
Quick Question : Why would you want to do that?
Answer to the question : Yes You can do it by Flashing A Relock ftf file for your device.
But Locked bootloader will stop the CWM from functioning,
Might leave your device soft brick.
Root has nothing much to do with boot loader lock or unlock. So boot will be present
I hope you find this information useful.
Advice : Do not attempt to lock it with root and CWM.
Correct procedure is to
1. Flash a CLEAN STOCK
and then
2. Flash ReLock
Greetings,
Dwarkesh
Click to expand...
Click to collapse
Hi,
I want to make bravia engine and download music info to work..SO I dont have cmw with a locked bootloader ?
Can you provide me a link of relock ftf file?So if I re lock bootloader I cant have cmw?there is no way to install it on jb?
am2222 said:
Hi,
I want to make bravia engine and download music info to work..SO I dont have cmw with a locked bootloader ?
Can you provide me a link of relock ftf file?So if I re lock bootloader I cant have cmw?there is no way to install it on jb?
Click to expand...
Click to collapse
Yes I can help you out with that.
Please Give Me Your Phone Details
Model
Current ROM
Current Version of ROM
dwarkesh2492 said:
Yes I can help you out with that.
Please Give Me Your Phone Details
Model
Current ROM
Current Version of ROM
Click to expand...
Click to collapse
Thanks my friend,
phone :xperia p(lti22)
rom:Stock jb 4.1.2
Current kernel:sliding xp 8.3
am2222 said:
Thanks my friend,
phone :xperia p(lti22)
rom:Stock jb 4.1.2
Current kernel:sliding xp 8.3
Click to expand...
Click to collapse
see here
http://forum.xda-developers.com/showthread.php?t=2301489
1) Flash stock JB ROM
2) Power On the device and let it settle a little bit
3) Power Off and flash the Sliding_XP Kernel
4) Enter CWM and flash a root app...here http://forum.xda-developers.com/showthread.php?t=1742522
5) Now flash the MOD that give you working again BE and Music Info Download
6) Choose Power Off in CWM menu and now connect your phone again to PC and flash the Stock Kernel download here http://www.mediafire.com/download/0v5c1pq341ouv2o/kernel.sin
7) Power On and let it settle a little bit
8) Now install this CWM http://forum.xda-developers.com/showthread.php?t=2020895 (remeber to tick the USB Debugging MOD in Setting/Developer Option)
9) Reboot enjoy your phone
am2222 said:
Thanks my friend,
phone :xperia p(lti22)
rom:Stock jb 4.1.2
Current kernel:sliding xp 8.3
Click to expand...
Click to collapse
Thank You For The Details,
I think all the steps are covered in the post above mine by Xperia_Fans
Following it would help you out with all you need.
Sorry for the late reply.
Take Care.
Do Reply with your progress.
Xperia_Fans said:
1) Flash stock JB ROM
2) Power On the device and let it settle a little bit
3) Power Off and flash the Sliding_XP Kernel
4) Enter CWM and flash a root app...here http://forum.xda-developers.com/showthread.php?t=1742522
5) Now flash the MOD that give you working again BE and Music Info Download
6) Choose Power Off in CWM menu and now connect your phone again to PC and flash the Stock Kernel download here http://www.mediafire.com/download/0v5c1pq341ouv2o/kernel.sin
7) Power On and let it settle a little bit
8) Now install this CWM http://forum.xda-developers.com/showthread.php?t=2020895 (remeber to tick the USB Debugging MOD in Setting/Developer Option)
9) Reboot enjoy your phone
Click to expand...
Click to collapse
Thanks ..I have done all of above steps..But how I can find that bootloader is locked ..I dont see any deference in beravia engine..Do you think I must install that mod again?
dwarkesh2492 said:
Thank You For The Details,
I think all the steps are covered in the post above mine by Xperia_Fans
Following it would help you out with all you need.
Sorry for the late reply.
Take Care.
Do Reply with your progress.
Click to expand...
Click to collapse
Thanks man.
I have done all steps as Xperia_Fans said..But how can I find out bootloader is relocked?
Check your bootloader status by typing *#*#7378423#*#* at phone and check via service info/configuration if write bootloader unlock allowed:yes mean you have success relock your bootloader but if write bootloader unlocked:yes mean you still in unlock status between the mod be doesn't work try use the blue green red image to test it if still doesn't work I suggest you post your.problem at that fix thread for the op helping u to fix...
Sent from my LT22i using xda premium
Xperia_Fans said:
Check your bootloader status by typing *#*#7378423#*#* at phone and check via service info/configuration if write bootloader unlock allowed:yes mean you have success relock your bootloader but if write bootloader unlocked:yes mean you still in unlock status between the mod be doesn't work try use the blue green red image to test it if still doesn't work I suggest you post your.problem at that fix thread for the op helping u to fix...
Sent from my LT22i using xda premium
Click to expand...
Click to collapse
Thanks for your help..I found "bootloader unlocked:yes" that means It havent relocked yet?why?I have done those steps as you said..The intresting thing is when I enable and disable bravia engine I saw deference in movie app but album doesnt have any change in pictures..Do I must repeat steps again?
no need to flashing 1 more time just download the album here https://www.box.com/s/ep07u7g1gp0d4w2g44fs set rw-r-r permission and move to system/app reboot and enjoy
Between if you want to relock your bootloader follow my thread here
http://forum.xda-developers.com/showthread.php?t=1999089
PS: I'm strongly recommended you reflash anything I mention above the post
Good Luck and Enjoy
Xperia_Fans said:
no need to flashing 1 more time just download the album here https://www.box.com/s/ep07u7g1gp0d4w2g44fs set rw-r-r permission and move to system/app reboot and enjoy
Between if you want to relock your bootloader follow my thread here
http://forum.xda-developers.com/showthread.php?t=1999089
PS: I'm strongly recommended you reflash anything I mention above the post
Good Luck and Enjoy
Click to expand...
Click to collapse
Thanks a lot,
So with your album.apk bravia engine will work fine?
I will report the result soon
am2222 said:
Thanks a lot,
So with your album.apk bravia engine will work fine?
I will report the result soon
Click to expand...
Click to collapse
I'm not sure but you should try it remember feedback here I'm glad to help...
the Album apps thanks to @DavidMKD
Xperia_Fans said:
I'm not sure but you should try it remember feedback here I'm glad to help...
the Album apps thanks to @DavidMKD
Click to expand...
Click to collapse
Thanks a lot,I installed album.apk that you have provided it..ut doesnt see any changes..I cleaned data too,I think now I must try to relock it using your topic..I will feedback again
am2222 said:
Thanks a lot,I installed album.apk that you have provided it..ut doesnt see any changes..I cleaned data too,I think now I must try to relock it using your topic..I will feedback again
Click to expand...
Click to collapse
Waiting for your feedback
Thanks dear friend,
Finally I locked bootloader with your topic and BE enabled in album app..It is great..I hope we can some day have BE with unlocked bootloader
am2222 said:
Thanks dear friend,
Finally I locked bootloader with your topic and BE enabled in album app..It is great..I hope we can some day have BE with unlocked bootloader
Click to expand...
Click to collapse
I don't think we can have BE on unlocked bootloader,but you can have on Movies.
Sent from my Sony Xperia™ sola using XDA Premium App
Ben Ling said:
I don't think we can have BE on unlocked bootloader,but you can have on Movies.
Sent from my Sony Xperia™ sola using XDA Premium App
Click to expand...
Click to collapse
Yes I mentioned that movie app has BE while unlocked bootloader but other apps has not BE..And this forced me to relock my phone
Hello guys i need a bit of help here.I want to root my phone ,I got Xperia P LT22i android 4.1.2 (build 6.2.A.0.400) bin4ry and other programs didnt help me , my device says that i cant unlock bootloader in the configurations ,What can i do to root my phone ? is there other methods to root a phone ?
Thanks in advance
no way??/
partizan29 said:
Hello guys i need a bit of help here.I want to root my phone ,I got Xperia P LT22i android 4.1.2 (build 6.2.A.0.400) bin4ry and other programs didnt help me , my device says that i cant unlock bootloader in the configurations ,What can i do to root my phone ? is there other methods to root a phone ?
Thanks in advance
Click to expand...
Click to collapse
so i guess there is no way to root my phone , only to wait until a new method will be released to root it without unlocking the bootloader?
Thats an old JB build. Update it.
Sent my Carbonised Xperia P
AndroidNoob69 said:
Thats an old JB build. Update it.
Sent my Carbonised Xperia P
Click to expand...
Click to collapse
I have the same build, and i can't update it. It says that i have the latest available update.
Any thoughts on that?
Thanks
mogwa1 said:
I have the same build, and i can't update it. It says that i have the latest available update.
Any thoughts on that?
Thanks
Click to expand...
Click to collapse
Updates are region and/or provider dependant.
You can take your chances and flash generic world formware.
ChikeD said:
Updates are region and/or provider dependant.
You can take your chances and flash generic world formware.
Click to expand...
Click to collapse
I want to do it so i can root my phone, but since I've never done this, I'm a bit insecure and hesitant.
From the research I've done rooting my Xperia P is preferred to be done with the latest firmware which I don't have.
What would you suggest I do? I am completely new to this.
Thanks
mogwa1 said:
I want to do it so i can root my phone, but since I've never done this, I'm a bit insecure and hesitant.
From the research I've done rooting my Xperia P is preferred to be done with the latest firmware which I don't have.
What would you suggest I do? I am completely new to this.
Thanks
Click to expand...
Click to collapse
Like before you do anything with your phone, take a full backup with PC Companion, and backup other data it doesn't manually.
Then you will need to download and install flashtool, install the drivers for Xperia P, flash mode, and fastboot mode with the drivers installer from drivers directory under flashtool directory.
Find and download generic 6.2.A.1.100 firmware file and flash it.
Exclude TA when you flash.
I have my firmware uploaded here, it's a two part 7-Zip, archive.
You may look for others that are more sutable for your region.
To root 6.2.A.1.100 use DooMLoRD Easy Rooting Toolkit.
My phone is acting really crazy and I can't do a backup with PC Companion, nor with the phone app for backup, but I don't care anymore.
I'll try everything you suggested and let you know if it worked.
Thanks a lot, you have been more than helpful. I really appreciate it.
Is there any root available? Does the old method works? Also does it work on locked bootloaders?
tazoman said:
Is there any root available? Does the old method works? Also does it work on locked bootloaders?
Click to expand...
Click to collapse
I recently rooted my locked z2 with this file. And for recovery i used http://forum.xda-developers.com/showthread.php?t=2785598
Dont forget to hit the thanks button
Surajn97 said:
I recently rooted my locked z2 with this file. And for recovery i used http://forum.xda-developers.com/showthread.php?t=2785598
Dont forget to hit the thanks button
Click to expand...
Click to collapse
anyone try ????
Surajn97 said:
I recently rooted my locked z2 with this file. And for recovery i used http://forum.xda-developers.com/showthread.php?t=2785598
Dont forget to hit the thanks button
Click to expand...
Click to collapse
R U talking about latest fw?
tazoman said:
Is there any root available? Does the old method works? Also does it work on locked bootloaders?
Click to expand...
Click to collapse
Not at this moment no, but it appears that a pre-rooted zip isn't far off.
ghostofcain said:
Not at this moment no, but it appears that a pre-rooted zip isn't far off.
Click to expand...
Click to collapse
not too far off
http://scr.hu/2tqx/5nj0a
Envious_Data said:
not too far off
http://scr.hu/2tqx/5nj0a
Click to expand...
Click to collapse
Could you provide a link to the the zip (or thread if any) to check it out? I would love to have a bit of hands on experience with the newest fw.
P.S: Havent tried it, I cant live without root .
Thanks
DaGhostman said:
Could you provide a link to the the zip (or thread if any) to check it out? I would love to have a bit of hands on experience with the newest fw.
P.S: Havent tried it, I cant live without root .
Thanks
Click to expand...
Click to collapse
for now ill post another screenshot as it isnt uploaded
http://scr.hu/2tqx/oo4fw
you will find a thread in the development section when its done uploading
there are some small problems which i wont be able to fix just becaue of lack of time, ill be leaving it upto Niaboc if he wants to fix it
Thanks for the fast reply! Can't wait to get on it.
This rooting method doesn't work on latest 4.4.4 for Z2
Sent from my D6503
Is it the latest 4.4.4 for Z2? And is it pre rooted? Which means can I flash this on my locked Z2?
Sent from my D6503
tazoman said:
This rooting method doesn't work on latest 4.4.4 for Z2
Sent from my D6503
Click to expand...
Click to collapse
Please, let me know when it will be possible to ROOT 23.0.1.A.0.167 Stock fw with locked bootloader. I will be very grateful.
Pishtiko said:
Please, let me know when it will be possible to ROOT 23.0.1.A.0.167 Stock fw with locked bootloader. I will be very grateful.
Click to expand...
Click to collapse
You will likely be waiting some time, because it's possible to downgrade and flash pre-rooted zip or to OTA certain FW's maintaining root, I don't see devs putting a lot of effort into finding an exploit. That said best hope is probably an exploit being found for Z3 which is transferable to Z2, but as I say you may be waiting some time.
So what you recommend to do if i want to have root on 167?
Tusnal said:
So what you recommend to do if i want to have root on 167?
Click to expand...
Click to collapse
Try to create a rooted update package from the update ftf: [4.4.4] Create ROOTED update package from stock FTF [LOCKED BOOTLOADER]
So I need to flash dual recovery to do that
How can I make a full stock backup just in case I need to use it for warranty?
Tusnal said:
So I need to flash dual recovery to do that
How can I make a full stock backup just in case I need to use it for warranty?
Click to expand...
Click to collapse
You don't need, you can flash back an original ftf anytime or repair with Sony PC Companion. We are talking locked bootloadr, so until you don't unlock it, you have warranty.
But if you already have root on prev. firmware, you should install DualRecovery and boot into TWRP and you can backup your system there.
norti said:
You don't need, you can flash back an original ftf anytime or repair with Sony PC Companion. We are talking locked bootloadr, so until you don't unlock it, you have warranty.
But if you already have root on prev. firmware, you should install DualRecovery and boot into TWRP and you can backup your system there.
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I just bought the phone and I really miss root hehe so if I don't unlock the bootloader I can change recovery and flash a stock root rom without losing warranty?
Tusnal said:
I just bought the phone and I really miss root hehe so if I don't unlock the bootloader I can change recovery and flash a stock root rom without losing warranty?
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Yes, if you have older firmware on the phone, you can try the root options available and you can use recovery without unlocking th bootloader. If you have the latest, than you can possibly flash an older firmware to your phone and root that. But you need to read a bit, to understand everything correctly.
I have successfully rooted my Z2 on 4.4.4 locked bootloader
Sent from my D6503