[Q] downgrade back to kitkat 4.4.4 - Sony Xperia Z Ultra

Is it possible to go back to stock kitkat 4.4.4 ftf from a stock lollipop 5.0.2 without having any issues like losing imei number or any other problems? My xperia z ultra 6833 was not upgraded from 4.4.4 to 5.0.2 with Ota. I flash with a stock 5.0.2 ftf via flashtool
Thanks

keltar41 said:
Is it possible to go back to stock kitkat 4.4.4 ftf from a stock lollipop 5.0.2 without having any issues like losing imei number or any other problems? My xperia z ultra 6833 was not upgraded from 4.4.4 to 5.0.2 with Ota. I flash with a stock 5.0.2 ftf via flashtool
Thanks
Click to expand...
Click to collapse
You have to wait til 5.0.2 is rootable. Check Sony site maybe you can unlock the bootloader on lollipop.

RealityFails said:
You have to wait til 5.0.2 is rootable. Check Sony site maybe you can unlock the bootloader on lollipop.
Click to expand...
Click to collapse
Why do I need to wait for 5.0.2 root? Or unlock bootloader? I wasnt rooted and my zu bootloader was locked when I upgraded from 4.4.4 to 5.0.2 with Sony flash tool. All I needed was a ftf file with same region

keltar41 said:
Why do I need to wait for 5.0.2 root? Or unlock bootloader? I wasnt rooted and my zu bootloader was locked when I upgraded from 4.4.4 to 5.0.2 with Sony flash tool. All I needed was a ftf file with same region
Click to expand...
Click to collapse
I'm not sure if you can downgrade that way. I would try? Maybe not? If anything goes wrong you could always just flash stock again.
If you root and unlock bootloader you can move between android. I'm on 5.0.2 I can go back to kitkat anytime I want.

Has anyone downgraded from 5.0.2 to 4.4.4 yet? without having to root or unlock their bootloader. The reason I don't want to unlock my bootloader is because I accidentally erased my ta backup. That's why Im trying to get back to 4.4.4 so I can root and backup my ta again to unlock my bootloader. I just want to know if it is safe to downgrade my 6833 zu without root or unlocked bootloader
Thanks

Lollipop uses a different firmware so probably not. I didn't black up my TA .. I just went about unlocking it.
Try to flash a 4.4.4 ftf?

Yes but I want to back up my ta first before I unlock my bootloader because if I don't I'll lose the xreality keys and warranty. so it has different firmware so 5.0.2 won't be downgradable to 4.4.4? so you suggest I wait for a 5.0.2 root.
Sorry yes I wanted to to flash a stock 4.4.4 ftf with Sony flashtool

I figured I would give an update I was able to downgrade from 5.0.2 to 4.4.4 ftf with a locked bootloader without any problems

keltar41 said:
I figured I would give an update I was able to downgrade from 5.0.2 to 4.4.4 ftf with a locked bootloader without any problems
Click to expand...
Click to collapse
how did you managed to downgrade?coud u please tell me the trick?

palalos81 said:
how did you managed to downgrade?coud u please tell me the trick?
Click to expand...
Click to collapse
Got my 4.4.4 region correct firmware from xperifirm then I flash the ftf with Sony flashtool. No trick really just go to this site techbeasts.com/2015/04/18/root-xperia-z-ultra-c6802-c6833-c6806-14-5-a-0-242-5-0-2-lollipop-firmware/ then scroll down to where it says 4.4.4 downgrade guide. It's easy and Im a noob to sony

keltar41 said:
Got my 4.4.4 region correct firmware from xperifirm then I flash the ftf with Sony flashtool. No trick really just go to this site techbeasts.com/2015/04/18/root-xperia-z-ultra-c6802-c6833-c6806-14-5-a-0-242-5-0-2-lollipop-firmware/ then scroll down to where it says 4.4.4 downgrade guide. It's easy and Im a noob to sony
Click to expand...
Click to collapse
thank u very much.it also says how to rout 5.02.. has anybody try it?

palalos81 said:
how did you managed to downgrade?coud u please tell me the trick?
Click to expand...
Click to collapse
I just rooted my device with the same guide just now so if your interested in that too it worked without any problems first time

palalos81 said:
thank u very much.it also says how to rout 5.02.. has anybody try it?
Click to expand...
Click to collapse
You can't root ? yet

keltar41 said:
Got my 4.4.4 region correct firmware from xperifirm then I flash the ftf with Sony flashtool. No trick really just go to this site techbeasts.com/2015/04/18/root-xperia-z-ultra-c6802-c6833-c6806-14-5-a-0-242-5-0-2-lollipop-firmware/ then scroll down to where it says 4.4.4 downgrade guide. It's easy and Im a noob to sony
Click to expand...
Click to collapse
thank you so much man i was desperatly looking for this one.

RealityFails said:
You can't root yet
Click to expand...
Click to collapse
Yes you can I'm on a rooted lollipop Xperia z ultra right now and I didn't have to unlock my bootloader.

keltar41 said:
Yes you can I'm on a rooted lollipop Xperia z ultra right now and I didn't have to unlock my bootloader.
Click to expand...
Click to collapse
So someone who gets an Ota for lollipop can turn around and root their phone? The only reason you're rooted is because you downloaded a pre rooted rom.
So again lollipop is un rootable

So has anybody followed this guide?
Was it effective? I am reluctant to unlock my bootloader but on how my xzu sounds on my earphones, I am very eager to install V4A.

i am go to sony service center for downgrade the xperia z ultra from 5.0.2 to 4.4.4 but they said xperia z ultra chipset cannot support downgrade there any solution for downgrade bcoz my z ultra only get software by pc companion and flashtool and custom rom cannot work plz help me i flsah custom rom then device stuck on sony logo

Has anyone downgraded c6506?
I cant find the ftf file nowhere

fermtz09 said:
I cant find the ftf file nowhere
Click to expand...
Click to collapse
You're in the wrong device section. This is the Z Ultra forum. Anyhow, I see that you have the ZL, so I'll make this short. Tell me your region, and I'll make you a 4.4.4 FTF.
EDIT: I'm assuming the C6506 is the American version of the ZL, so the only 4.4.4 file that's available is the one for Puerto Rico. I'm building it now, so I'll put a link to it here when it's done.
Edit2:
https://drive.google.com/file/d/0B_VjBcIjyoZDd1p1aVIwYk02Qzg/view?usp=sharing

Related

regarding update .136

Hi guys,
Just realized there is a new update. I am on rooted .290 model C6802,
Here are my few questions:
1. Do i need to update it from Sony Pc Companion ? As on rooted fw there is no notification for any updates.
2. Do i get to keep root ?
3. Will I still have an unlocked bootloader?
4. Will I still have a stock kernel ?
5. How do i update it to a clean stock rom will every thing 'untouched' ? Wanna check a few things and then root later.
6. Any improvement in this fw ?
7. how do i keep track of fw update as my ultra doesnt deliver me any notification ?
1. You have to update it through PC Companion or SUS..
2. No doubt your root will be lost..
3. To keep the root you've to first update then unlock the Bootloader of your device..which will void your warranty unless you take a TA backup and then unlock..
4. To root on your lock Bootloader you've to wait for a while..
Revert back if you need anymore info..
Hit Thanks if I helped you..
Sent from my LT26i using xda app-developers app
Pannam said:
Hi guys,
Just realized there is a new update. I am on rooted .290 model C6802,
Here are my few questions:
1. Do i need to update it from Sony Pc Companion ? As on rooted fw there is no notification for any updates.
2. Do i get to keep root ?
3. Will I still have an unlocked bootloader?
4. Will I still have a stock kernel ?
5. How do i update it to a clean stock rom will every thing 'untouched' ? Wanna check a few things and then root later.
6. Any improvement in this fw ?
7. how do i keep track of fw update as my ultra doesnt deliver me any notification ?
Click to expand...
Click to collapse
1. I've not see anyone with an ota update, I think they have all been PCC or flashing a FTF
2. The FTF kills root, not sure about PCC. Root is easy to get back with a unlocked bootloader http://forum.xda-developers.com/showthread.php?t=2630781
3. Wont touch the BL state
4. Yes
5. Um... just flash the FTF or via PCC - make a nandroid backup beforehand of cause
6. There is a thread about this in grneral
7. Plug in the ultra to a PC, some of the updates have come as OTA, but will normally fail on a rooted device
Thank you for the reply
The update doesnt work from the pc companion on rooted devices.
Pannam said:
Thank you for the reply
The update doesnt work from the pc companion on rooted devices.
Click to expand...
Click to collapse
That leaves two causes, unroot and flash via PCC or flash the FTF from flashtool. Plenty of ways to get root back if you have an unlocked bootloader now
FTFs are here http://forum.xda-developers.com/showthread.php?t=2453921
For now I am trying to decrypt the file I downloaded from pcc. Hope I can make a ftf then.
I tried the depository but cant find one for C6802.
Pannam said:
For now I am trying to decrypt the file I downloaded from pcc. Hope I can make a ftf then.
I tried the depository but cant find one for C6802.
Click to expand...
Click to collapse
I have the c6802 and flashed the 6833 version, no real issues except the phone will think it's a c6833 :silly:
blueether said:
I have the c6802 and flashed the 6833 version, no real issues except the phone will think it's a c6833 :silly:
Click to expand...
Click to collapse
Lol! But C6833 is an LTE variant. I think it will drain battery. I guess c6802 should work better on its dedicated stock fw.
Anyways u knw better.
btw to unroot you need a locked bootloader. To avoid bootloops a stock kernel is required rt ? I am on fw. 290 but cant find the stock kernel anywhere.

[Q] Can I relock bootloader of SPG311, will this allow OTA KitKat update to install ?

Just bought a second hand SGP311 (Sony Tablet Z Wifi), and the bootloader is unlocked.
OTA upgrade to KitKat fails.
Can I relock the bootloader ? Will this allow OTA KitKat update to install ?
Jak.
jjaakk said:
Just bought a second hand SPG311 (Sony Tablet Z Wifi), and the bootloader is unlocked.
OTA upgrade to KitKat fails.
Can I relock the bootloader ? Will this allow OTA KitKat update to install ?
Jak.
Click to expand...
Click to collapse
Judging by the posts I've read and from my own experience, it appears if your tablet has been rooted or if its boot loader has been unlocked, OTA updates will fail.
You could relock bootloader if You would have TA backup. Without this I think it is not possible
redikx said:
TA backup.
Click to expand...
Click to collapse
No, I don't have a TA backup, as I bought this second hand. It is an inherited problem !
I guess I will need to go the whole way with the tablet, and try and load KitKat 4.4.2 from an image.
I have a large learning curve to climb.
Does Google Play work on images that are uploaded to the SPG311 tablet ? What other limitations are there from using a custom ROM (even if it is a Stock ROM) ?
jjaakk said:
Just bought a second hand SPG311 (Sony Tablet Z Wifi), and the bootloader is unlocked.
OTA upgrade to KitKat fails.
Can I relock the bootloader ? Will this allow OTA KitKat update to install ?
Jak.
Click to expand...
Click to collapse
I believe you can simply relock your bootloader using Flashtool by following these steps:
1. Make sure you're using the latest version of flashtool
2. In flashtool click the button that says 'BLU'
3. When it asks you to, connect the tablet in flashmode (hold the volume down button while connecting it)
4. Click on 'Relock' on the prompt window that will open
5. Follow whatever instructions flashtool gives you and disconnect the device after its done
But please verify this by searching online before trying it out because I'm not an expert and I did this on a Xperia Z Ultra succesfully but not on the Tablet Z. I wouldn't want to be responsible for messing up your tablet!
Once you do relock the bootloader OTA updates will be allowed.
jjaakk said:
Does Google Play work on images that are uploaded to the SGP311 tablet ? What other limitations are there from using a custom ROM (even if it is a Stock ROM) ?
Click to expand...
Click to collapse
In case anyone finds this thread:
I was able to successfully downgrade to a 4.1.2 image, root, then upgrade to a 4.4.2 10.5.A.0.230 STOCK ROM using the instructions at
[STOCK ROM] [Root] [FTF] 4.4.2 Kitkat Xperia Tablet Z SGP311 10.5.A.0.230 VMo UK IE. Very good instructions, and easy to follow.
Now my SGP311 is on 4.4.2, rooted, and I have not had any problems at all with Google Play. I don't think I have found any limitations.
Hope this helps.

[Q] Rooting with locked bootloader and software updates

Does towelroot root the xperia z2 with .314 firmware ? And it roots it with the bootloader locked right? And if yes can i update the stock firmware via ota or pc companion as soon as a new stock firmware is available? Thanks !
@nicojapanese Hi m8, yeah Towelroot will root .314 Firmware (I used it with my locked Bootloader). It may update over OTA but no guarantee. You can update via Pc companion by repairing your phone (you will loose root though) then re- rooting or you can flash a FTF via Flash tool. You can find loads of usefull info and links regarding Bootloaders, Flashtool, rooting and recoveries etc here. Hope this helps ya a bit m8:good:
OTA/Usb updates will fail verifacation if rooted
Unroot and uninstall all mods and it should work, if not flash a FTF using flashtool
Envious_Data said:
OTA/Usb updates will fail verifacation if rooted
Unroot and uninstall all mods and it should work, if not flash a FTF using flashtool
Click to expand...
Click to collapse
Ok how do you unroot a sony xperia z2 with locked bootloader?
stress40 said:
@nicojapanese Hi m8, yeah Towelroot will root .314 Firmware (I used it with my locked Bootloader). It may update over OTA but no guarantee. You can update via Pc companion by repairing your phone (you will loose root though) then re- rooting or you can flash a FTF via Flash tool. You can find loads of usefull info and links regarding Bootloaders, Flashtool, rooting and recoveries etc here. Hope this helps ya a bit m8:good:
Click to expand...
Click to collapse
Ok if i try updating it ota and i brick it. Can i just do a hard reset and would it be working again?
nicojapanese said:
Ok how do you unroot a sony xperia z2 with locked bootloader?
Click to expand...
Click to collapse
Hit the unroot button in the supersu app
nicojapanese said:
Ok if i try updating it ota and i brick it. Can i just do a hard reset and would it be working again?
Click to expand...
Click to collapse
It wont brick if you try OTA update m8. It will just fail verification. Nothing more, nothing less:good:
Envious_Data said:
Hit the unroot button in the supersu app
Click to expand...
Click to collapse
ok thanks . after hitting unroot in supersu i can try updating ota for new stock firmwares?
nicojapanese said:
ok thanks . after hitting unroot in supersu i can try updating ota for new stock firmwares?
Click to expand...
Click to collapse
You can try m8, no guarantees though. What firmware are you on? Do you have root already?
stress40 said:
You can try m8, no guarantees though. What firmware are you on? Do you have root already?
Click to expand...
Click to collapse
im in 314 . no i dont have root. because i dont want to root my phone and when the android l fw comes ill be unable to update.
nicojapanese said:
im in 314 . no i dont have root. because i dont want to root my phone and when the android l fw comes ill be unable to update.
Click to expand...
Click to collapse
Worse case if you root is you'll need to install L as an ftf via flashtool, so if you want root I'd go ahead.
ghostofcain said:
Worse case if you root is you'll need to install L as an ftf via flashtool, so if you want root I'd go ahead.
Click to expand...
Click to collapse
im downloading the xperia flashtool. is that the correct one?
ghostofcain said:
Worse case if you root is you'll need to install L as an ftf via flashtool, so if you want root I'd go ahead.
Click to expand...
Click to collapse
if i install an ftf from another region (generic unbranded nordic) but im from another (philippines) will it be ok?

[Q&A] [FULL ROOT] Community RootKit! (ASEC vulnerability) {v01} [20140615]

Q&A for [FULL ROOT] Community RootKit! (ASEC vulnerability) {v01} [20140615]
Some developers prefer that questions remain separate from their main development thread to help keep things organized. Placing your question within this thread will increase its chances of being answered by a member of the community or by the developer.
Before posting, please use the forum search and read through the discussion thread for [FULL ROOT] Community RootKit! (ASEC vulnerability) {v01} [20140615]. If you can't find an answer, post it here, being sure to give as much information as possible (firmware version, steps to reproduce, logcat if available) so that you can get help.
Thanks for understanding and for helping to keep XDA neat and tidy!
Custom Roms
So it turns out I can't unlock my bootloader but can still use this method to root. Does this still mean that I can flash custom roms on my phone? I was very excited to get cyanogenmod on this beast of a phone, it'll be really disappointing if I can't.
OTA Updates
Will rooting the phone still give me access to OTA updates? And if I do still get them, will updating to Lollipop remove root from the phone?
how to lock the bootloader
please help,
how do i re-lock my bootloader ?
how to root 4.4.4 ??? for locked bootloader???
Rootkit For xperia Z2 in 23.0.1.A.0.167 ?
Hi!
are you working on a version for the xperia z2 with a 23.0.1.A.0.167 FW ???
Thanks.
nohedah said:
how to root 4.4.4 ??? for locked bootloader???
Click to expand...
Click to collapse
There is no root exploit for 4.4.4 with locked bootloader yet. You can root a previous fw and flash a pre-rooted 4.4.4 rom in recovery.
pieropel76 said:
Hi!
are you working on a version for the xperia z2 with a 23.0.1.A.0.167 FW ???
Thanks.
Click to expand...
Click to collapse
There is no way to root that, at least with locked bootloader.
I kind of rushed into this
Just wondering mainly about the 'TA' stuff, from what I read - this will not affect any of that and I can unroot and get it back to warranty standard at any time by flashing, but how would I go about backing up the TA after this has completed?
Also will i lose my google auth app when this has completed because I totally overlooked that when I started and I'm worried now I will be locked out of all my accounts. lol
Thanks guys
z2 whit 23.0.1.A.0.167
hello,
if got the z2 today and i want to root i't but when i hookt up my phone to the pc i let it update not knowing
that de exploit from DooMLoRD won't work whit 23.0.1.A.0.167.
is i't possible to get a root in this way whit out lossing drm key's?
first unlock bootloader
than flash cwm recovery 6.0.4.6
en than install this zip thru cwm, SuperSU update.zip
and than backup ta partition.
greets.
sc334 said:
hello,
if got the z2 today and i want to root i't but when i hookt up my phone to the pc i let it update not knowing
that de exploit from DooMLoRD won't work whit 23.0.1.A.0.167.
is i't possible to get a root in this way whit out lossing drm key's?
first unlock bootloader
than flash cwm recovery 6.0.4.6
en than install this zip thru cwm, SuperSU update.zip
and than backup ta partition.
greets.
Click to expand...
Click to collapse
Flash back a 4.4.2 firmware with Flashtool, root it, install the dualrecovery from [NUT] and flash a pre-rooted 4.4.4 update from the recovery.
norti said:
Flash back a 4.4.2 firmware with Flashtool, root it, install the dualrecovery from [NUT] and flash a pre-rooted 4.4.4 update from the recovery.
Click to expand...
Click to collapse
oke but on this option i wont loss the drm key's
becaus i flasht a ftf befor and lost the key's in that way not on this phone a nother z2.
sc334 said:
oke but on this option i wont loss the drm key's
becaus i flasht a ftf befor and lost the key's in that way not on this phone a nother z2.
Click to expand...
Click to collapse
DRM keys are only lost if you unlock your bootloader. Flashing stock ftf does not do that (exclude .ta files and use the same country/provider you bought the phone from)
norti said:
DRM keys are only lost if you unlock your bootloader. Flashing stock ftf does not do that (exclude .ta files and use the same country/provider you bought the phone from)
Click to expand...
Click to collapse
yes indeed, the other one was unlocked bootloader but stock ftf rom so that was the problem.
how to root?
how to room sony xperia z2 with 4.4.4 version and with new build number
please i need you guys help
thanks
zbwafi said:
how to room sony xperia z2 with 4.4.4 version and with new build number
please i need you guys help
thanks
Click to expand...
Click to collapse
I flasht back to 17.1.2.a.0.314 (4.4.2) whit the new build nummer root it instalt dualrecovery.
And dan instal the pre rooted 4.4.4 whit the same new build number.
root issue
Hi Guys,
I have a followed the guide, but something is not right...
When the cell phone should blink it shows the detailed config instead, followed the instructions after (crashed all apps), command prompt disappears, but the phone is not rooted.
Any idea?
Thanks!
Model: D6503
Build Number: 17.1.1.A.0.402
sc334 said:
I flasht back to 17.1.2.a.0.314 (4.4.2) whit the new build nummer root it instalt dualrecovery.
And dan instal the pre rooted 4.4.4 whit the same new build number.
Click to expand...
Click to collapse
but how to flash it back to 17.1.2.a.0.314 (4.4.2) version can you please help me for this?
thank you very much.
sony xperia z2 4.4.4 root
got a new sony with 4.4.4 on out of the box is there a way to root my device ?
furax the man said:
got a new sony with 4.4.4 on out of the box is there a way to root my device ?
Click to expand...
Click to collapse
There is and is mentioned a lot of you bothered to search. You options are :
* drum roll *
1 Downgrade to 4.4.2
2 Unlock bootloader
o0 Matt 0o said:
There is and is mentioned a lot of you bothered to search. You options are :
* drum roll *
1 Downgrade to 4.4.2
2 Unlock bootloader
Click to expand...
Click to collapse
i know but i found a topic and it says u need an rooted device to downgrade to 4.4.2 i didnt found another topic

Xperia Z2 Android 4.4.4 (23.0.1.A.0.167) ROOT AND RECOVERY

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.
Click to expand...
Click to collapse
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

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