[Q] Back to 100% Stock - Sony Xperia Z Ultra

Dear users.
I would like to go back to a 100% stock C6802 ultra but cannot find how.
I used the flash tool to flash .510 (Was on my machine already) and everything worked great, phones boots and looks good.
Only when i update to .532 witch Sony Bridge it say's i am on a custom firmware and for that he cannot update my phone.
Same goed for the Sony update tool on Windows.
i had other boot.img's on the phone for CWM, maybe that is the issue?
Can someone tell me how i can go back to 100% stock.
(I don't know if i need it in this step, but i got a TA backup)
Please let me know.
Thnx in advance.

Maybe it will help you
http://forum.xda-developers.com/showthread.php?t=2451002

avetny said:
Maybe it will help you
http://forum.xda-developers.com/showthread.php?t=2451002
Click to expand...
Click to collapse
Thnx for reply.
The Bootloader was still unlocked, after relock it works fine.
(Stupid me )
Thnx.

Donstil said:
Thnx for reply.
The Bootloader was still unlocked, after relock it works fine.
(Stupid me )
Thnx.
Click to expand...
Click to collapse
No problem my friend, glad we helped you.

Donstil said:
Thnx for reply.
The Bootloader was still unlocked, after relock it works fine.
(Stupid me )
Thnx.
Click to expand...
Click to collapse
Donstil how you relocked bootloader?
I checking flashtool and there is no option like that

avetny said:
Donstil how you relocked bootloader?
I checking flashtool and there is no option like that
Click to expand...
Click to collapse
If you unlocked via classrooms then you can relock with it too. All under the bLU button. You might need to just need to insert your unlock code in flashtools to make it work.
Sent from my Xperia Z Ultra using xda app-developers app

kurosawa79 said:
If you unlocked via classrooms then you can relock with it too. All under the bLU button. You might need to just need to insert your unlock code in flashtools to make it work.
Sent from my Xperia Z Ultra using xda app-developers app
Click to expand...
Click to collapse
OK got it. Thank you.
So I pressed unlock bootloader (insert unlock code).The flashtool unlocked my bootloader "second time". And after restarted Flashtool, I saw relock option.
Regards

Same here. I did a unlock manual trough fastboot so FlashTool did not see it as unlocked.
After inlocking again trough flashtool i was able to relock trough BLU.
I am back unlockd btw. An on Panadroid

Related

[CLOSED][Q] How to Relock Bootloader (Xperia Mini Pro)

How do I relock my Xperia Mini Pro? I unlocked it through the official way on the Sony Website and wanting to relock it now. I reflashed my phone to stock ROM with stock KERNEL and want to lock the bootloader. I downloaded Flashtool and now I don't know what to do. Should I use Flashtool or S1tool? Please help, thanks
Plus, Flashtool is not recognizing any drivers I have installed, I installed my phone's driver using Gordan Gate's which I got from WontanServer. Will I have to install the drivers manually?
If you used official method, you will need this file, attached to my post, inside the .rar file, and Flashtool. Just place the .ftf file in Flashtool/firmwares folder, then open Flashtool, flashmode and pick the relock_bootloader.ftf file. Make sure your phone is in Flashmode also.
About drivers...I cannot remember, which drivers did I install...
Thanks, a lot, I have finally relocked the bootloader. But just to make sure, how can I check If my bootloader is locked or unlocked? Thanks
BudgyN1 said:
Thanks, a lot, I have finally relocked the bootloader. But just to make sure, how can I check If my bootloader is locked or unlocked? Thanks
Click to expand...
Click to collapse
Dial *#*#7378423#*#* service info>cofiguration.If it says bootloader unlocked allowed : yes then it's locked, if bootloader unlocked : yes then it's unlocked.
One qeustion by my side: After relocking the bootloader, is it posiible when you send it to the servis to be detected that the bootloader has been unlocked (or maybe that the device has been rooted) previously? I have relocked the bootloader and done repair with Pc companion so everything is like before well.....except that before i did a root with flashtool and didn't knew that the stock firmware isn't rootable like that and i lost 3G!!!!!!...now i must set to 2g in order to get signal coz i get with 3g weak signal and when i make a call it drops off. That's why i want to send it to the service
T3sla said:
Dial *#*#7378423#*#* service info>cofiguration.If it says bootloader unlocked allowed : yes then it's locked, if bootloader unlocked : yes then it's unlocked.
Click to expand...
Click to collapse
Mine says bootloader unlocked : yes and it's unlocked !!!
babis01 said:
Mine says bootloader unlocked : yes and it's unlocked !!!
Click to expand...
Click to collapse
I can't see the problem with that
T3sla said:
I can't see the problem with that
Click to expand...
Click to collapse
Read the topic title.
Did you flash the .ftf file with Flashtool properly? It worked on me perfectly, was able to lock the bootloader without problems.
Someguyfromhell said:
Read the topic title.
Did you flash the .ftf file with Flashtool properly? It worked on me perfectly, was able to lock the bootloader without problems.
Click to expand...
Click to collapse
I did.That's not the user who started the topic and he didn't provide info whether he tried to relock or not bootloader so...
T3sla said:
I did.That's not the user who started the topic and he didn't provide info whether he tried to relock or not bootloader so...
Click to expand...
Click to collapse
No i didn't try to relock it and i'm sorry for the misunderstanding..
What i was trying to say is that if i reflash my phone to stock ROM with stock KERNEL and take it to service how will they know that it's unlocked?
If they try the known dial *#*#7378423#*#* method my devise says : bootloader unlocked allowed : yes
babis01 said:
No i didn't try to relock it and i'm sorry for the misunderstanding..
What i was trying to say is that if i reflash my phone to stock ROM with stock KERNEL and take it to service how will they know that it's unlocked?
If they try the known dial *#*#7378423#*#* method my devise says : bootloader unlocked allowed : yes
Click to expand...
Click to collapse
I knew that your post had nothing to do with relocking patrida If you unlocked your phone with sony's official method you loose your DRM even if you relock it.Now, about the service, i highly doubt they gonna search if you unlocked it but i can't swear about that.There is also another method unlocking your phone without loosing DRM but didn't tried it and i don't know if they can detect it or not
T3sla said:
... you loose your DRM even if you relock it...
Click to expand...
Click to collapse
Now i get it.. you loose your DRM the exact time you ask them to provide you unlock code!
So,no matter what you do afterwards they allready know which device is unlocked and which is not.. sosta thessalonikie mou??
My phone is unlocked with the "other" method and let's hope that i'll never have to take it to them and wonder if they detect it or not!!!
My phone now is locked and to check if your bootloader is locked or not, download S1tool. Open S1tool and click "Identify" and then follow the onscreen instructions. When your phone's information comes up it will say "R(some numbers and letters)". If you have a capital R means your bootloader is locked, if you have a small r means your bootloader is unlocked.
babis01 said:
Now i get it.. you loose your DRM the exact time you ask them to provide you unlock code!
So,no matter what you do afterwards they allready know which device is unlocked and which is not.. sosta thessalonikie mou??
My phone is unlocked with the "other" method and let's hope that i'll never have to take it to them and wonder if they detect it or not!!!
Click to expand...
Click to collapse
You lose DRM, if you unlock via fastboot using official method. When DRM is gone, it is completely gone, currently there is no way of getting it back.
BudgyN1 said:
.. Open S1tool and click "Identify" and then follow the onscreen instructions. When your phone's information comes up it will say "R(some numbers and letters)". If you have a capital R means your bootloader is locked, if you have a small r means your bootloader is unlocked.
Click to expand...
Click to collapse
Will try that tonight and get back to you with the results!
Can you guys please tell me what this "other" method is? The one by which you can unlock a Xperia Mini without loosing DRM.
papul said:
Can you guys please tell me what this "other" method is? The one by which you can unlock a Xperia Mini without loosing DRM.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1285285
will this work on xperia active?
etherflux said:
will this work on xperia active?
Click to expand...
Click to collapse
Yes. It should work on all 2011 xperia devices.
Sent from my ST15i using XDA
papul said:
Yes. It should work on all 2011 xperia devices.
Sent from my ST15i using XDA
Click to expand...
Click to collapse
thanks mate. i owe you one
---------- Post added 2nd April 2012 at 12:15 AM ---------- Previous post was 1st April 2012 at 11:53 PM ----------
thanks! this method works for xperia active

Please Help Guys

I had an unlocked bootloader with cm9 installed..
then i wanted stock rom so i followed a guide and relocked bootloader and restored original baseband and kernel..
but then when i start my phone then sony ericssion logo appears and it only keeps appearing and after that nothing happens..
i also tried flashtool again but when i try to flash something it says that flashing aborted.. plz help guys as soon as possible :crying::crying::crying::crying:
Hi bro, why and how did you restore your bootloader? Seem lots of similar cases
Try to unlock again. And try to reflash Stock Rom with SEUS. You don't have to relock bootloader to flash Stock Rom, in what guide, which you follow, you read that?
Sent from my X10i using xda premium
Dzufa said:
Try to unlock again. And try to reflash Stock Rom with SEUS. You don't have to relock bootloader to flash Stock Rom, in what guide, which you follow, you read that?
Sent from my X10i using xda premium
Click to expand...
Click to collapse
Hello Sir.. i dnt know which guide but i still wanted to restore bootloader.. i cannot unlock again because flashtool is not flashing any kernel to my phone.. Plz help.. i have successfully relocked bootloader and also installed stock kernel but after that i m nt having xrecovery to flash rom nor flashtool is working..:crying::crying::crying:
Bares said:
Hi bro, why and how did you restore your bootloader? Seem lots of similar cases
Click to expand...
Click to collapse
Hi bro.. i just wanted donut hd rom again and it was not flashing in unlocked bootloader so i relocked bootloaderusing s1 tool and flashtool but after that flashtool is not flashing any xrecovery or any kenel..:crying::crying::crying::crying:l
Rishabhj.official said:
Hi bro.. i just wanted donut hd rom again and it was not flashing in unlocked bootloader so i relocked bootloaderusing s1 tool and flashtool but after that flashtool is not flashing any xrecovery or any kenel..:crying::crying::crying::crying:l
Click to expand...
Click to collapse
Nope, donut HD can be flashed on locked/unlocked bootloader, u should know this.
The reason why i asked u how is : some users relock
their bootloader improperly, and it could brick the phone permanently.
Bares said:
Nope, donut HD can be flashed on locked/unlocked bootloader, u should know this.
The reason why i asked u how is : some users relock
their bootloader improperly, and it could brick the phone permanently.
Click to expand...
Click to collapse
Ohh.. u have any solution..??????
And ya also when start phone se logo appers.. but then nothing happens..
Plz help
Regards
Rishabhj.official said:
Ohh.. u have any solution..??????
And ya also when start phone se logo appers.. but then nothing happens..
Plz help
Click to expand...
Click to collapse
That is bricked phone, so i ask u again :
How you restore your bootloader? detail pls!
Flash stock rom using flash tool. If you can't get flash mode in normal way try this. Take off battery, connect USB to phone, pc, hold back button, insert battery. Good luck.
Bares said:
That is bricked phone, so i ask u again :
How you restore your bootloader? detail pls!
Click to expand...
Click to collapse
Hey thanks but today i went to a shop (Nanak communication) and get my phone repaierd he too
450 rupees and also he restored my phone by usking some SETOOL2...
Please Help Guys [Solved]
Rishabhj.official said:
Hey thanks but today i went to a shop (Nanak communication) and get my phone repaierd he too
450 rupees and also he restored my phone by usking some SETOOL2...
Click to expand...
Click to collapse
I'm really glad to heared that bro .
To unlock and restore our bootloader we need to
refert to Stock Rom and Kernel ( Official stock),
This is really safe and eassiest way, btw we absolutely no need to restore our bootloader unless for warranty purpose.
Congrate buddy

$100 to anyone that figures out how to root a Sony Z2 with locked Bootloader

I bought this device in Canada, The provider is Bell.
My bootloader is locked. And following the Sony steps.. It says it won't unlock.
In device, tap Service info > Configuration > Rooting Status. Bootloader unlock allowed says No,
All my favorite apps won't work properly without root.
If anyone figures a way to root it.. I'll give you $100.
01-
Unlock bootloader
Root - via cwm with supersu flashable zip
Flash totaly stock kernel
Relock
02-
Or flash a prerooted FTF but im too lazy to make one
(my attempt is mid finished :/)
-03
No exploits unfortionatly
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
Easy
Unlock bootloader
Root - via cwm with supersu flashable zip
Flash totaly stock kernel
Relock
It should work
Or flash a prerooted FTF but im too lazy to make one
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Read his post again. It says root a LOCKED bootloader. Your first listed step was 'Unlock bootloader'.
Uclydde said:
Read his post again. It says root a LOCKED bootloader. Your first listed step was 'Unlock bootloader'.
Click to expand...
Click to collapse
Oh i missed that
I guess i better get to work on a prerooted system only FTF
Lol i dont even want that $100, just a chalange for me
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
Easy
Unlock bootloader
Root - via cwm with supersu flashable zip
Flash totaly stock kernel
Relock
It should work
Or flash a prerooted FTF but im too lazy to make one
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Sorry, I should have stated that my bootloader will not unlock. I already tried the sony steps.
exc1d1us said:
Sorry, I should have stated that my bootloader will not unlock. I already tried the sony steps.
Click to expand...
Click to collapse
Well i guess ill try making a prerooted FTF
I cant live without root and its probably torture for some
For now someone may find an root exploit, if not then blerhg, FTF it is
Try keeping an eye out in development sections
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
Well i guess ill try making a prerooted FTF
I cant live without root and its probably torture for some
For now someone may find an root exploit, if not then blerhg, FTF it is
Try keeping an eye out in development sections
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thank you.. I stick by my word for the $100.. Like you said.. it's torture.
exc1d1us said:
Sorry, I should have stated that my bootloader will not unlock. I already tried the sony steps.
Click to expand...
Click to collapse
Wait why won't it unlock? Does your phone say its bootloader can't be unlocked or did you just have trouble unlocking it?
Uclydde said:
Wait why won't it unlock? Does your phone say its bootloader can't be unlocked or did you just have trouble unlocking it?
Click to expand...
Click to collapse
My phone says bootloader cannot be unlocked. In Canada the Z2 started as an exclusive with Bell Mobility.. the Sony store versions are unlockable though.
exc1d1us said:
I bought this device in Canada, The provider is Bell.
My bootloader is locked. And following the Sony steps.. It says it won't unlock.
In device, tap Service info > Configuration > Rooting Status. Bootloader unlock allowed says No,
All my favorite apps won't work properly without root.
If anyone figures a way to root it.. I'll give you $100.
Click to expand...
Click to collapse
$100.... it's sounds good? Okay from my experience I bought my XperiaZ from Australian Telco before and it said Bootloader unlock allowed:No
but when I flashed official generic ftf using flashtool. It's said Bootloader Unlock allowed:Yes. So if you can take a risk try it(do it by your own! and don't forget to back up!)... you might try to do that. Luckly my XperiaZ2 is bootloader allowed one. Hope I have a chance to get 100bucks
CenteaOSD said:
$100.... it's sounds good? Okay from my experience I bought my XperiaZ from Australian Telco before and it said Bootloader unlock allowed:No
but when I flashed official generic ftf using flashtool. It's said Bootloader Unlock allowed:Yes. So if you can take a risk try it(do it by your own! and don't forget to back up!)... you might try to do that. Luckly my XperiaZ2 is bootloader allowed one. Hope I have a chance to get 100bucks
Click to expand...
Click to collapse
This is very dangrous, this depends on the contents of the FTF and i wouldent recoment this at al
Have you tried flashing the German DE generic FTF, i think it has stuff for the TA partition
This may do your job
I still dont recomend, do this at your own will if you know how to unbrick a device
Although i would try it but only because i know how to unbrick a xperia (lol this part usualy takes a while)
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
This is very dangrous, this depends on the contents of the FTF and i wouldent recoment this at al
Although i would try it but only because
Have you tried flashing the German DE generic FTF, i think it has stuff for the TA partition
This may do your job
I still dont recommend, do this at your own will if you know how to unbrick a device
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I noticed him that it must be done by his own.... But he asks us to is there are anyway to do that? so I just posted the way I did.
I am not recommending him to do that.... I just simply answered his question. Always flash ftf w/o TA and partition.
It is recommended everywhere and If once he started to searching about flash tool it is warned by everyone.
You can't back up TA partition w/o root. So I don't think there is any way to get XperiaZ2 to back to completely stock.
(Although i would try it but only because ←What does it mean? It doesn't make sense for me.)
Well, I tried to flash the stock FTF.. same version as my devices. It errored.. and I am now bricked.
You can't modify an FTF and flash it to a bootloader locked device, modifying it will break Sony's signature verification
I'm guessing there's no way to unbrick?
Michealtbh said:
You can't modify an FTF and flash it to a bootloader locked device, modifying it will break Sony's signature verification
Click to expand...
Click to collapse
You can its just extremly hard and people have usualy only included a system.sin and nothing else
I used KA25s PreRooted FTF for xperia S back a while ago
(good old GB only 80mb non freeable ram)
exc1d1us said:
Well, I tried to flash the stock FTF.. same version as my devices. It errored.. and I am now bricked.
Click to expand...
Click to collapse
How i unbrick my devices usualy (if they are locked bootloader)
Pt1
Unplug device totaly
Hold power
Hold volume up
Wait for it to buzz 3 times in a row
(rubber bands usualy help)
(ensure battery isnt killed from doing this (low charge)
(aka dont leave rubber bands for several hours)
Pt2
Download and install sony PC companion
Go to support
Go to repair device
Folow instructions
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
You can its just extremly hard and people have usualy only included a system.sin and nothing else
Click to expand...
Click to collapse
You'll need to find Sony's signing key then. Good luck with that
Aww.... We warned you.... it must be done by your own and not recommended. Try SEUS.... (Not sure if it works for yours....
Everything what you've done with flashtool will be avoid your warranty..... I think when you downloaded flashtool they warned you again....
As EnviousData warned you too.... even I did not recommended to do that.... dear....
Ok, I managed to unbrick.. back to bootloader unlock allowed: No
Still.. If you guys have any ideas how to root.. $100.
exc1d1us said:
Ok, I managed to unbrick.. back to bootloader unlock allowed: No
Still.. If you guys have any ideas how to root.. $100.
Click to expand...
Click to collapse
Honestly i say keep your $$$ and wait for a exploit or root method of sorts
Me and my FTF will be a while and Z2 Development has started very slow and may be a while before anything of the sorts comes avaliable
I suggest if you realy want to root try exchanging your device for an unlocked one (or unlockable :/)
Sent from my D6503 using XDA Premium 4 mobile app

[Q] Error code 2003 while trying to update.

Hello everyone. Seriously need help here with a xperia z ultra c6883. I bought it off someone and tried to do an update from the phone but it keeps saying 14.3.A.0.757 could not verify. FYI, I checked to see if bootloader is locked and it says yes. I downloaded rootchecker and it says device not rooted. I dont know where to turn. i just want to be at stock.
android version says- 4.4.2
baseband version says -8974-AAAAANAZQ-10270045-39
kernel version says - 3.4.0-perf-g8c33725
[email protected] #1
build number says_ 14.3.A.0.681
What does this all mean? Am I rooted? Do I have an unlocked bootloader? Can I just go back to stock? Or is it easier to just upgrade to lollipop?
Try locking the boot loader and then connect to Sony PCC and redo the phone.
Sent from my C6806_GPe using XDA Premium HD app
cameljockey1 said:
Try locking the boot loader and then connect to Sony PCC and redo the phone.
Sent from my C6806_GPe using XDA Premium HD app
Click to expand...
Click to collapse
How do I relock bootloader.? Can you point me to or instruct me on how to do it?
elperezo said:
How do I relock bootloader.? Can you point me to or instruct me on how to do it?
Click to expand...
Click to collapse
you can use flashtool (http://flashtool.net) to relock the bootloader, but if you download flashtool you may as well just use that to update the ZU to the latest FTF from here (see the FTF thread in the dev section)
Is there a how to video on the process? Ive read things like ( I need to know what rom im using or drm keys etc etc) Dont know what to do.
elperezo said:
Is there a how to video on the process? Ive read things like ( I need to know what rom im using or drm keys etc etc) Dont know what to do.
Click to expand...
Click to collapse
In the FTF thread there is a video
As you brought the ZU already bootloader unlocked the DRM keys are gone (unless the last owner still has the backup). Just flashing a FTF doesn't relock the bootloader, you have to use the BLU icon in flashtool. The BL does't have to be locked to flash a FTF but it does to get/use the updates directly from Sony.
Any more Q's just ask
Ok thank you for the info. If you dont mind I might hit you up tommorrow for more Q's.

How to update my firmware with pc companion If I have unlocked bootloader?

Im a root user. I would to know if blocking the BL again i can update my firmware from PC companion.
Use the Xperia Flashtool and you should have no issues even if you have an unlocked BL
ardentis said:
Use the Xperia Flashtool and you should have no issues even if you have an unlocked BL
Click to expand...
Click to collapse
Thanks for your answer man . You mean download the last FW from XperiFirm and then Flash it with Flashtools? Do you know if I can get the official firmware from another side?
I have another question. My phone has unlocked bootloader. Is there a possibility to lock it again? I have not any keys...
saydcold said:
Thanks for your answer man . You mean download the last FW from XperiFirm and then Flash it with Flashtools? Do you know if I can get the official firmware from another side?
Click to expand...
Click to collapse
XperiFirm in lastest Flashtool
xernes said:
I have another question. My phone has unlocked bootloader. Is there a possibility to lock it again? I have not any keys...
Click to expand...
Click to collapse
Right now i don't think so. Nobody posted any thread to that yet
BOLEK_PL said:
XperiFirm in lastest Flashtool
Right now i don't think so. Nobody posted any thread to that yet
Click to expand...
Click to collapse
yep you can re lock it i have done it using flash tool there is a button BLU click it and follow to re lock your BLU :good:
Right now i don't think so. Nobody posted any thread to that yet
Click to expand...
Click to collapse
yep you can re lock it i have done it using flash tool there is a button BLU click it and follow to re lock your BLU
Click to expand...
Click to collapse
@BOLEK_PL
You were wrong...
@kpbs92
Thanks, now my phone is locked again.
xernes said:
@BOLEK_PL
You were wrong...
@kpbs92
Thanks, now my phone is locked again.
Click to expand...
Click to collapse
Good to hear that

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