Database Develop

After unlock/recovery/root, how to return to stock?

Hi there!
I've unlocked using flashtool, installed CWM Recovery and rooted using the recovery-only root.
Now, I need to return the phone to as stock as possible - certainly removing root, but relocking the bootloader would be a good secondary objective.
My current plan is to use the flashtool to relock the bootloader, then use the PC software to repair the phone. Will this work?
Thanks for your help
Edit: I've searched the forums but can't find an answer, including in the starting thread - please link to a relevant portion instead of the whole thing if possible
Further edit: There's no 'relock' option in the flashtool - huh?

VelocityGrill said:
Hi there!
I've unlocked using flashtool, installed CWM Recovery and rooted using the recovery-only root.
Now, I need to return the phone to as stock as possible - certainly removing root, but relocking the bootloader would be a good secondary objective.
My current plan is to use the flashtool to relock the bootloader, then use the PC software to repair the phone. Will this work?
Thanks for your help
Edit: I've searched the forums but can't find an answer, including in the starting thread - please link to a relevant portion instead of the whole thing if possible
Further edit: There's no 'relock' option in the flashtool - huh?
Click to expand...
Click to collapse
As of now there is no option to relock the bootloader. You can unroot the phone by simply performing a repair system command in Sony PC Companion or flashing a stock rom. This has been explained in every single rooting or custom MOD thread.

Ya you are right. Relock bootloader using flashtool and repair or flash a ftf from flashtool.
And IIRC in the beta version of flashtool u will find option to relock under BLU. And btw u won't get back DRM keys and no Bravia engine.

shem2409 said:
You can unroot the phone by simply performing a repair system command in Sony PC Companion or flashing a stock rom. This has been explained in every single rooting or custom MOD thread.
Click to expand...
Click to collapse
Sony PC companion approach doesn't work
sdhanush1 said:
Ya you are right. Relock bootloader using flashtool and repair or flash a ftf from flashtool.
And IIRC in the beta version of flashtool u will find option to relock under BLU. And btw u won't get back DRM keys and no Bravia engine.
Click to expand...
Click to collapse
I don't see the option to relock anywhere - perhaps as I did the unlock on another PC?

If you can't get it to work with PC Companion use SUS (Sony Update Service which you can download from Sony's website) http://www.sonymobile.com/gb/tools/update-service/ --> for UK

shem2409 said:
If you can't get it to work with PC Companion use SUS (Sony Update Service which you can download from Sony's website) http://www.sonymobile.com/gb/tools/update-service/ --> for UK
Click to expand...
Click to collapse
The phone contains modified software that cannot be upgraded - ah well!

VelocityGrill said:
The phone contains modified software that cannot be upgraded - ah well!
Click to expand...
Click to collapse
You have to relock the bootloader with flashtool beta4,click on BLU.
Flash a stock rom and repair it by update service.
Sent from my SO-02E using xda premium

gm007 said:
You have to relock the bootloader with flashtool beta4,click on BLU.
Flash a stock rom and repair it by update service.
Sent from my SO-02E using xda premium
Click to expand...
Click to collapse
Thanks - I expected there to be a separate button for relocking - whoops!
I've flashed the stock ROM and that's gotten rid of the root. It also says that the bootloader can be unlocked, so that seems all perfect as far as I'm concerned. Thanks for your help, ladies and gentlemen.

[Q] Re-lock bootloader xperia t lt30p

Hi, I unlocked the bootloader on my xperia t lt30p one time with intention to root it and install custom roms but never did as I nearly bricked it when putting a kernel on. I managed to put what I think is a stock kernel and rom back on, but I went to update it the other day and pc companion says that it could not complete the operation because the phone has been modified. I read somewhere that having the bootloader unlocked can cause this, so I wish to re lock it. Could anyone point me in the direction of a good tutorial to do so? Cheers...
Josh

josh1quattro said:
Hi, I unlocked the bootloader on my xperia t lt30p one time with intention to root it and install custom roms but never did as I nearly bricked it when putting a kernel on. I managed to put what I think is a stock kernel and rom back on, but I went to update it the other day and pc companion says that it could not complete the operation because the phone has been modified. I read somewhere that having the bootloader unlocked can cause this, so I wish to re lock it. Could anyone point me in the direction of a good tutorial to do so? Cheers...
Josh
Click to expand...
Click to collapse
This thread has steps for relocking the bootloader - http://forum.xda-developers.com/showthread.php?t=2092227, they were using a Xperia V so you'll need to use a different FTF file for your Xperia T- http://forum.xda-developers.com/showthread.php?t=1924221

josh1quattro said:
Hi, I unlocked the bootloader on my xperia t lt30p one time with intention to root it and install custom roms but never did as I nearly bricked it when putting a kernel on. I managed to put what I think is a stock kernel and rom back on, but I went to update it the other day and pc companion says that it could not complete the operation because the phone has been modified. I read somewhere that having the bootloader unlocked can cause this, so I wish to re lock it. Could anyone point me in the direction of a good tutorial to do so? Cheers...
Josh
Click to expand...
Click to collapse
the link provided by our friend is quite good, that's where you have to head over
and about the tutorial, tha't so easy, just flash that FTF file via Flashtools
power off your phone, open flashtools, select flash logo, then FLASH MODE, then connect your phone as you are pressing down the VOLUME DOWN button, and let it do the rest
disconnect and enjoy your relocked bootloader

So I won't need to re flash the rom again? sorry. I'm a bit of a noob at phone modding. Pc's I can do. Not phones yet. Hahaha.

no, flash the relock ftf found in the dev section, and it just relocks your bootloader, your rom will stay the same

josh1quattro said:
So I won't need to re flash the rom again? sorry. I'm a bit of a noob at phone modding. Pc's I can do. Not phones yet. Hahaha.
Click to expand...
Click to collapse
RElock won't affect you rom, BUT if you unlcok AGAIN, then at the very first start up of the phone when it is the first time after RE-UNlocking, it will have a factory reset
just wanted to let you know
but for now, NO, it won't touch your firmware

Just done it. Worked. Cheers guys,

josh1quattro said:
Just done it. Worked. Cheers guys,
Click to expand...
Click to collapse
pressing Thank button is a better option, instead of saying "cheers", believe me
happy to see you made it, bro

Relocking Xperia T
BarneyJ said:
This thread has steps for relocking the bootloader - http://forum.xda-developers.com/showthread.php?t=2092227, they were using a Xperia V so you'll need to use a different FTF file for your Xperia T- http://forum.xda-developers.com/showthread.php?t=1924221
Click to expand...
Click to collapse
I want to relock ma Xperia T via EMMA Flashtool...I have downloaded the relock xperia t.ftf file...but i dont know how to drage and drop the file to Emma service list..plz help..ma device is near dead...

engrizhar said:
I want to relock ma Xperia T via EMMA Flashtool...I have downloaded the relock xperia t.ftf file...but i dont know how to drage and drop the file to Emma service list..plz help..ma device is near dead...
Click to expand...
Click to collapse
Use flashtool

some questions about warranty

if i root my device i lose warranty?
if i flashed my country stock sony ftf sony can see that i flashed a rom?
my bootloader is locked

ihaxda1 said:
if i root my device i lose warranty?
if i flashed my country stock sony ftf sony can see that i flashed a rom?
my bootloader is locked
Click to expand...
Click to collapse
No
warranty will void when u unlock bootloader
Or some damages because of unofficial 3rd party tools
So try to Flash via Emma Flash tool (from Xperia Developers)
if need to repair try SUS
and be careful if wanna use another tools :good:
(i got these info from talk.sony & xperiablog)

x102x96x said:
No
warranty will void when u unlock bootloader
Or some damages because of unofficial 3rd party tools
So try to Flash via Emma Flash tool (from Xperia Developers)
if need to repair try SUS
and be careful if wanna use another tools :good:
(i got these info from talk.sony & xperiablog)
Click to expand...
Click to collapse
i did stuff with root and my device got stuck so i flashed with this http://forum.xda-developers.com/showthread.php?t=2229790
the stock rom i had before i rooted so i still got warranty?

ihaxda1 said:
i did stuff with root and my device got stuck so i flashed with this http://forum.xda-developers.com/showthread.php?t=2229790
the stock rom i had before i rooted so i still got warranty?
Click to expand...
Click to collapse
yeah
if u used a flash tool and didn't damage ur phone its OK > u have warranty :good:

thx

Root for 14.2.A.1.136?

Hey
Can someone tell me how to root on this version or link something please
Thanks in advanced

SpawnCube said:
Hey
Can someone tell me how to root on this version or link something please
Thanks in advanced
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2632808

SpawnCube said:
Hey
Can someone tell me how to root on this version or link something please
Thanks in advanced
Click to expand...
Click to collapse
You can't root this version directly.
You have 2 options.
1) Unlock bootloader.
2) Downgrade to 4.2, root via vroot then upgrade.
More details here.

thalada said:
You can't root this version directly.
You have 2 options.
1) Unlock bootloader.
2) Downgrade to 4.2, root via vroot then upgrade.
More details here.
Click to expand...
Click to collapse
no use downgrade than root. will lose root after update to 290/136.

chunlianghere said:
no use downgrade than root. will lose root after update to 290/136.
Click to expand...
Click to collapse
You can always use nut method for upgrade but it doesn't support this version i guess.
or you can always go for a custom rom which is prerooted.

thalada said:
You can always use nut method for upgrade but it doesn't support this version i guess.
or you can always go for a custom rom which is prerooted.
Click to expand...
Click to collapse
i know there is a method will sure work.
-use flashtool flash custom kernel
-go to cwm flash a zip file (update_supersu.zip) provided by someone in xda, credit to tat person!
-finally flash stock ftf with only kernel.
-done! rooted!

@chunlianghere, @thalada, What are you doing People? From all the links just one is correct, for .290. Also NEVER give advice to Unlock Bootlader because users cannot be aware of the risk doing this like lose Permanently DRM Keys and Warranty, FOREVER. Because if you do not advice of the risk someone can Unlock the Bootloader then lose DRM keys and if so it will NEVER be relocked and warranty will be void permanently, so before give advice learn what is all about!
@SpawnCube, the .136 cannot be rooted directly but can be Rooted with the method by NUT for Locked Bootloader. If your Model is C6903 you can downgrade directly to .534 with FW provided by NUT to not lose IMEI, then Root with Bin4ry, then Update to .290 with the instructions given HERE, when you have .290 rooted you are ready to update to .136 with the same method HERE.
For different Models the downgrade have to be done differently, downgrade to .257 FW First, then to .534 FW to not lose IMEI, but you will update anyway so there is no problem even if you will lose it.
Watch the Video Tutorial How To in the first Link for .290. It will explain all.

eclyptos said:
@chunlianghere, @thalada, What are you doing People? From all the links just one is correct, for .290. Also NEVER give advice to Unlock Bootlader because users cannot be aware of the risk doing this like lose Permanently DRM Keys and Warranty, FOREVER. Because if you do not advice of the risk someone can Unlock the Bootloader then lose DRM keys and if so it will NEVER be relocked and warranty will be void permanently, so before give advice learn what is all about!
@SpawnCube, the .136 cannot be rooted directly but can be Rooted with the method by NUT for Locked Bootloader. If your Model is C6903 you can downgrade directly to .534 with FW provided by NUT to not lose IMEI, then Root with Bin4ry, then Update to .290 with the instructions given HERE, when you have .290 rooted you are ready to update to .136 with the same method HERE.
For different Models the downgrade have to be done differently, downgrade to .257 FW First, then to .534 FW to not lose IMEI, but you will update anyway so there is no problem even if you will lose it.
Watch the Video Tutorial How To in the first Link for .290. It will explain all.
Click to expand...
Click to collapse
cannot relock? flashtool can do that.
got risk or not, its all in the forum/thread. it depends on whether that person wan to search n do some homework or not.
we cannot be forever spoon feed everything rite?
anyway i tink only samsung will lose IMEI. dont tink sony phone will. all the previous sony phone tat i hav, didnt encounter any lose IMEI.
tat is y i love sony instead of samsung. samsung is too complicated.

chunlianghere said:
cannot relock? flashtool can do that.
got risk or not, its all in the forum/thread. it depends on whether that person wan to search n do some homework or not.
we cannot be forever spoon feed everything rite?
anyway i tink only samsung will lose IMEI. dont tink sony phone will. all the previous sony phone tat i hav, didnt encounter any lose IMEI.
tat is y i love sony instead of samsung. samsung is too complicated.
Click to expand...
Click to collapse
That sound like you try to be smart without know anything about it. So then you should go back to read the whole Xperia section before Post.
If you Unlock Bootloader you will lose DRM Key permanently and you warranty will be void forever. To avoid that You have to Backup TA, to Backup TA you need Root, but if you Unlock Bootloader before have root you will lose DRM. It is clear NOW?
I think only Samsung lose IMEI? Read again the whole Xperia section and Rooting Section.
If you love Samsung because is not so complicated then you are in wrong section.

eclyptos said:
That sound like you try to be smart without know anything about it. So then you should go back to read the whole Xperia section before Post.
If you Unlock Bootloader you will lose DRM Key permanently and you warranty will be void forever. To avoid that You have to Backup TA, to Backup TA you need Root, but if you Unlock Bootloader before have root you will lose DRM. It is clear NOW?
I think only Samsung lose IMEI? Read again the whole Xperia section and Rooting Section.
If you love Samsung because is not so complicated then you in wrong section.
Click to expand...
Click to collapse
i m just letting SpawnCube that there is a way to root it.
so tat thread will point out about the danger n risk of losing DRM key. got it?
err...open your eyes BIG! or u don understand english? no offence
"tat is y i love sony instead of samsung. samsung is too complicated."
Click to expand...
Click to collapse

chunlianghere said:
i m just letting SpawnCube that there is a way to root it.
Click to expand...
Click to collapse
You did not, you put him in a wrong way.
chunlianghere said:
so tat thread will point out about the danger n risk of losing DRM key. got it?
Click to expand...
Click to collapse
You got it now?
chunlianghere said:
err...open your eyes BIG! or u don understand english? no offence
Click to expand...
Click to collapse
I see, my bad, but I understand how do stuff on Z1.

eclyptos said:
You did not, you put him in a wrong way.
You got it now?
I see, my bad, but I understand how do stuff on Z1.
Click to expand...
Click to collapse
actually i dont care much about DRM key anyway. send for warranty only if hardware is spoilt. the most ask them do last warranty repair.
if DRM key n warranty is so much important, than sony would hav "Bootloader unlocked: NO" for all phone in the world
actually sony doesnt do the warranty n repair. it depends on the company in tat particular country. like example for doomlord, his one is only flap damage, but can get 1 to 1 exchange. tat shows tat how good the company is in tat country.
unlocking bootloader n rooting is pretty much standard.
technology n software is improving at a fast rate. the most i get a latest newer phone.

chunlianghere said:
actually i dont care much about DRM key anyway. send for warranty only if hardware is spoilt. the most ask them do last warranty repair.
if DRM key n warranty is so much important, than sony would hav "Bootloader unlocked: NO" for all phone in the world
actually sony doesnt do the warranty n repair. it depends on the company in tat particular country. like example for doomlord, his one is only flap damage, but can get 1 to 1 exchange. tat shows tat how good the company is in tat country.
unlocking bootloader n rooting is pretty much standard.
technology n software is improving at a fast rate. the most i get a latest newer phone.
Click to expand...
Click to collapse
Ok, here you are right but you have to understand that, what is not important you, it may be important for others, especially when we talking about Warranty.
We are here to give advice, then we should do this in the right way and inform users of any risk.

eclyptos said:
Ok, here you are right but you have to understand that, what is not important you, it may be important for others, especially when we talking about Warranty.
We are here to give advice, then we should do this in the right way and inform users of any risk.
Click to expand...
Click to collapse
hey eclyptos, hope you still around this thread.
i quite agree with you, since i am one of those who care about warranty.
I hope it's fine to make a question about rooting here 'coz i can't make post on there. anw, i've been trying to follow the steps on here, but i find some trouble.
My status is :
Device : Xperia Z1 C6903
Build number : 14.2.1.136
what I did was :
Installing Flashtool 9.13 on PC
Download C6903_14.2.A.0.290.flashable.zip and put it on my first page of SDcard on device
Download C6903_14.2.A.0.290.Stripped.tft inside flashtool/firmwares folder on PC
Install TWRP on my device (can’t be used, root needed), can’t create a backup *step 5 failed*
XZDualRecovery Question : I’ve download it, connect my device to PC then enable USB debugging mode. Execute the install.bat from XZDualRecovery and choose number 2. Does anything really happened? *step 6 failed?*
Then I install the flashmode and fastboot drivers from flashtool folders. Tried to flashmode C6903_14.2.A.0.290 Brand Generic NCB but it stopped halfway.

aeroclubber said:
hey eclyptos, hope you still around this thread.
i quite agree with you, since i am one of those who care about warranty.
I hope it's fine to make a question about rooting here 'coz i can't make post on there. anw, i've been trying to follow the steps on here, but i find some trouble.
My status is :
Device : Xperia Z1 C6903
Build number : 14.2.1.136
what I did was :
Installing Flashtool 9.13 on PC
Download C6903_14.2.A.0.290.flashable.zip and put it on my first page of SDcard on device
Download C6903_14.2.A.0.290.Stripped.tft inside flashtool/firmwares folder on PC
Install TWRP on my device (can’t be used, root needed), can’t create a backup *step 5 failed*
XZDualRecovery Question : I’ve download it, connect my device to PC then enable USB debugging mode. Execute the install.bat from XZDualRecovery and choose number 2. Does anything really happened? *step 6 failed?*
Then I install the flashmode and fastboot drivers from flashtool folders. Tried to flashmode C6903_14.2.A.0.290 Brand Generic NCB but it stopped halfway.
Click to expand...
Click to collapse
The Video Tutorial on that thread explain very well what you should do, did you watched it?
You have to downgrade via Flashtool to .534 FW provided by NUT to not lose IMEI, Root the Firmware with Bin4ry, when you are rooted instal Dual Recovery, then follow the instruction to update directly to .136 from HERE.
All the files you find in .290 thread, Post #3, Watch the Video, then follow .136 thread.

[q] want to replace rooted z1 in sony servuce center

I got damage in my z1.Sony is ready to bear it.but z1 is rooted and unlocked bootloader also.i am on nuts rom 4.4.
What Precautions to be taken So sony Service centre not caught me???:silly:...
Steps to get back plzz

restore your TA backup and repair software using pccompanion

backup ta not recognise device
Sir i am noob kindly tell me whole process from starting plzz..need help really

restore your TA backup using the same tool you used to back it up (You did make a TA backup?) If not then use flashtool to relock it
Download PCCopanion, run it, attach phone to computer and click on software update, if it says you have the latest software then click on repair my phon.e

my phone is dead coz of u thanx..
i done exactly u said i restored backup and my phone got dead help nowww

pathanraj said:
i done exactly u said i restored backup and my phone got dead help nowww
Click to expand...
Click to collapse
now repair your phone using pccompanion
Please follow all the instructions.
Once you have relocked then you will not be able to boot if you have flashed a custom kernel.

phone dead no recognise by pc companion
gregbradley said:
now repair your phone using pccompanion
Please follow all the instructions.
Once you have relocked then you will not be able to boot if you have flashed a custom kernel.
Click to expand...
Click to collapse
i restore ta backup..it ask for restart.i restart..and my phone is not restarting now..not recognise by pc companion too.now what help..

pathanraj said:
i restore ta backup..it ask for restart.i restart..and my phone is not restarting now..not recognise by pc companion too.now what help..
Click to expand...
Click to collapse
please follow the instructions
Download pccompanion, run it, choose software update, then click on repair phone and follow the instructions it says

gregbradley said:
please follow the instructions
download pccompanion, run it, choose software update, then click on repair phone and follow the instructions it says
Click to expand...
Click to collapse
man pc companion not recognising it.. its dead how pc companion can find it..

click here
http://prntscr.com/3nd4su
then here
http://prntscr.com/3nd4wj
Then here
http://prntscr.com/3nd50a
then follow the instructions
Do not attach the phone until it asks you to do it in flashmode

I flash it with flashtool
gregbradley said:
click here
http://prntscr.com/3nd4su
then here
http://prntscr.com/3nd4wj
then here
http://prntscr.com/3nd50a
then follow the instructions
do not attach the phone until it asks you to do it in flashmode
Click to expand...
Click to collapse
i flashed it with flashtool..now i am on .534 firmware..can i take z1 to sony service center now or have to do more..have my bootloader is locked? I have still my drm keys with me??answere plkzz all things

gregbradley said:
restore your TA backup using the same tool you used to back it up (You did make a TA backup?) If not then use flashtool to relock it
Download PCCopanion, run it, attach phone to computer and click on software update, if it says you have the latest software then click on repair my phon.e
Click to expand...
Click to collapse
gregbradley said:
now repair your phone using pccompanion
Please follow all the instructions.
Once you have relocked then you will not be able to boot if you have flashed a custom kernel.
Click to expand...
Click to collapse
gregbradley said:
please follow the instructions
Download pccompanion, run it, choose software update, then click on repair phone and follow the instructions it says
Click to expand...
Click to collapse
gregbradley said:
click here
http://prntscr.com/3nd4su
then here
http://prntscr.com/3nd4wj
Then here
http://prntscr.com/3nd50a
then follow the instructions
Do not attach the phone until it asks you to do it in flashmode
Click to expand...
Click to collapse
There are 4 answers already, please follow them, I never said to use flashtool to flash 534 FW, I said to use flashtool to relock your bootloader
Repair your phone using pccompanion. If the bootloader is unlocked then it wont work, and it will tell you.
If it is locked then it will work and you will be on a factory shipped latest firmware.

I'm on. 257 repairing thru pc companion
gregbradley said:
There are 4 answers already, please follow them, I never said to use flashtool to flash 534 FW, I said to use flashtool to relock your bootloader
Repair your phone using pccompanion. If the bootloader is unlocked then it wont work, and it will tell you.
If it is locked then it will work and you will be on a factory shipped latest firmware.
Click to expand...
Click to collapse
I am now on. 257 flash thru flashtool and bootloader status in service menu is bootloader unlock allowed:yes
Now repairing with pc companion..Is there any problem mate???

pathanraj said:
.Is there any problem mate???
Click to expand...
Click to collapse
The problem is that you are not reading.

eclyptos said:
The problem is that you are not reading.
Click to expand...
Click to collapse
Sorry but I got feared when phone die..and flash it with. 257.. now my phone is repairing in sony pc companion
companion..let's see what's the result..I want to know that will drm keys are restore when repaired??

pathanraj said:
.I want to know that will drm keys are restore when repaired??
Click to expand...
Click to collapse
I answered to this question on your other thread. Anyway, PCC do not restore any DRM Keys, then No.

my keys are active in security menu inside servic. test
I checked in security as all keys are damn active there..is all thing alright??

pathanraj said:
I checked in security as all keys are damn active there..is all thing alright??
Click to expand...
Click to collapse
Yes.

one last Question
eclyptos said:
Yes.
Click to expand...
Click to collapse
As I repaired my phone successfully with Pc companion
companion..I am still on. 257 and pc companion showing my device up to date..no matters to upgrade to 4.4 bcoz want to replace it with new..but all is alright??
My drm keys are active all..
Bootloader unlock allowe'd is Yes
Now is there anything left that void my warranty..

pathanraj said:
As I repaired my phone successfully with Pc companion
companion..I am still on. 257 and pc companion showing my device up to date..no matters to upgrade to 4.4 bcoz want to replace it with new..but all is alright??
Click to expand...
Click to collapse
Doesn't matter.
pathanraj said:
My drm keys are active all..
Bootloader unlock allowe'd is Yes
Now is there anything left that void my warranty..
Click to expand...
Click to collapse
No.