Unlocking bootloader tablet Z (Guide) - Xperia Tablet Z Q&A, Help & Troubleshooting

When unlocking the bootloader for the tablet Z i xperienced some problems.
So I made a more extensive guide than the one from Sony
You can find it Here
Greetings!

Sieth said:
When unlocking the bootloader for the tablet Z i xperienced some problems.
So I made a more extensive guide than the one from Sony
You can find it Here
Greetings!
Click to expand...
Click to collapse
Wow, that's a long guide. Is the main/only reason to unlock the bootloader to install custom roms (can't this be done with just root access?).
I have root, but don't really wish to install custom roms. I don't have the bootloader unlocked, but I know it can be unlocked

why to unlock bootloader?
why to unlock bootloader?
1. u can flash custom ROMs/Kernels
2. u dont need to worry if the new firmware can be rooted or not as with unlocked bootloader u can always ROOT ur device
3. Sony gives sneak-peaks/preview builds of latest OS which requires unlocked bootloaders, as they did with Xperia 2011/2012 line, so who knows may be Sony may give early builds of next android OS

Best guide I found online. Thanks!

suleiman.aql said:
Best guide I found online. Thanks!
Click to expand...
Click to collapse
I think it would be wise to mention not to forget to backup TA partition with DRM keys before bootloader unlock.

Thank you very much. This tutorial covered all the issues I ran into so I knew what to do.
Btw, the .bat for allowing unsigned drivers doesn't work on Windows 8. A quick google search helped me but maybe you might want to add that to your tutorial for other, less techy users.
Rootk1t said:
I think it would be wise to mention not to forget to backup TA partition with DRM keys before bootloader unlock.
Click to expand...
Click to collapse
Wish I saw this post earlier. Oh well.

its not asking me for the driver at step 14, anyone have suggestions on what to do

Sieth said:
When unlocking the bootloader for the tablet Z i xperienced some problems.
So I made a more extensive guide than the one from Sony
You can find it Here
Greetings!
Click to expand...
Click to collapse
Thank you so much, you saved my bricked tablet!
I won't go into details but I really messed up and this saved me, I would hit that thanks button a million times if I could!

any help
Hi all I have the lte tablet z. When I go to the service menu I can see it cant be unlocked. Dose that mean I cant root it to put a custom recoveryand custom Rom on it. Sorry to sound noob

abbo76 said:
Hi all I have the lte tablet z. When I go to the service menu I can see it cant be unlocked. Dose that mean I cant root it to put a custom recoveryand custom Rom on it. Sorry to sound noob
Click to expand...
Click to collapse
if your bootloader can't be unlocked it means that you can root your device, but won't be able to install any custom firmware. But you can install XZDR recovery.

Once you get the bootloader unlocked what is the root method? Also, is there a different process for flashing roms?

kuhl_man said:
Once you get the bootloader unlocked what is the root method? Also, is there a different process for flashing roms?
Click to expand...
Click to collapse
to root device you don't have to unlock bootloader. Unlocking is for installing custom ROMs.

That I understand. Thank you. I was asking since i already unlocked the bootloader and am unrooted. What is the process to gain root at this point?

kuhl_man said:
That I understand. Thank you. I was asking since i already unlocked the bootloader and am unrooted. What is the process to gain root at this point?
Click to expand...
Click to collapse
flash or hotboot kernel (or flash recovery to FOTA partition) with recovery and flash SuperSU from it.

Wow bro u just copy my work from htcmania this is the link
http://www.htcmania.com/showthread.php?t=706381 is easy thrue just delete my Spanish traduction and look for the date I make it in 2013 bro very nice copy and paste from my work only u just delete my spanish

unlock bootloader on SGP312
Hi
any reason why after following all step to unlock the bootloader on my SGP312 I get lock in a boot loop.........
As soon as the boot animation start it freeze and the tab reboot........
Fastboot command work after Fastboot -i............... the PC show the amount of second........
I got my number from Sony to unlock...
Curiosity...........
Thanks.......

MikeViller said:
Hi
any reason why after following all step to unlock the bootloader on my SGP312 I get lock in a boot loop.........
As soon as the boot animation start it freeze and the tab reboot........
Fastboot command work after Fastboot -i............... the PC show the amount of second........
I got my number from Sony to unlock...
Curiosity...........
Thanks.......
Click to expand...
Click to collapse
Bro if u fallow my link in htcmania is really good is working but this guy copy my work just follow the instructions in my link many users of htcmania unlock the bootloader of the tablet
---------- Post added at 12:12 AM ---------- Previous post was at 12:09 AM ----------
Sieth said:
When unlocking the bootloader for the tablet Z i xperienced some problems.
So I made a more extensive guide than the one from Sony
You can find it Here
Greetings!
Click to expand...
Click to collapse
I don't say thank you for your copy, this is u steal my work u don't deserve nothing soon I will post my work from htcmania here

Don't suppose anyone can help please. I am trying to unlock my bootloader. I have successfully connected to my computer by fastboot and everything is recognised and looks to be fine right up until I put the unlock command in and I get this error.
c:\sdk\platform-tools>fastboot devices
CB5A1WYECJ fastboot
c:\sdk\platform-tools>>fastboot -i 0x0fce oem unlock 0xFBCD6A2B26CB8F88
'-i' is not recognized as an internal or external command,
operable program or batch file.
c:\sdk\platform-tools>
its now starting to drive me crazy. Thanks very much in advance

kingguff said:
Don't suppose anyone can help please. I am trying to unlock my bootloader. I have successfully connected to my computer by fastboot and everything is recognised and looks to be fine right up until I put the unlock command in and I get this error.
its now starting to drive me crazy. Thanks very much in advance
Click to expand...
Click to collapse
Use Flashtool. It can automatically unlock bootloader. Only unlock code 0xFBCD6A2B26CB8F88 is needed.

Cant figure out which file to replace and where it is. Can get my tab to recognize in adb devices mode but nothing is coming up when i type fastboot devices in adb. It is not recognized. I am stuck. Any help will be appreciated. I have got unlock code and the usb inf file but no light further.

Related

[Q] nOOb help request for first time rooting.

Hey all,
I got an Xperia Mini and want to root it. I have read through the forum and threads and I think I have an idea, but I want confirmation.
I have the 4.0.2.A.0.62 kernel.
The help here said that I must follow the instructions of the tutorial here. My questions are:
1) It says Please note that this is only applied to devices with unlocked bootloader. Is my phone's bootloader unlocked as is now? Do I have to do anything to unlock?
2) I don't understand the second step properly. Do I turn the phone off. Hold the volume button and while holding it, attach the USB cable to the PC? Does that put the phone in fastboot mode? What about any drivers the computer would need to talk to the phone?
When I use the phone's dialer app, there are these things in the corners when I am talking and I end up tapping the hold button often. I want to get rid of that. Is there a way to do that?
Thanks for any help
use this if u want to unlock bootloader, u cant go wrong using this.
http://forum.xda-developers.com/showthread.php?t=1560613
after successfully unlock, u can just flash any custom kernel using that tool too. the kernel will root your phone automatically.
edited: but if u just want to root without messing with bootloaders and kernels flashing etc use this
http://forum.xda-developers.com/showthread.php?t=1321582
Hey man,
Thanks for that. I bought the phone off amazon. Is there anyway to check if the bootloader is already unlocked? Would there be issues if I tried to unlock the bootloader with the tool you linked to if it is already unlocked?
an0nym0us_ said:
edited: but if u just want to root without messing with bootloaders and kernels flashing etc use this
http://forum.xda-developers.com/showthread.php?t=1321582
Click to expand...
Click to collapse
I was going to use the zergrush method, but there was a note that said that if you have the 0.62 firmware, you should follow the fastboot method for which I need an unlocked bootloader.
open the phone dialpad and type *#*#7378423#*#*, the select service info, then configuration.
lowest line under "rooting status" what does it say?
Bootloader unlock allowed: Yes
your bootloader is still locked and can be unlocked. u can proceed with the unlock tool if u want.
btw forgot to mention, if u managed to unlock u can check in the same menu and it'll show "Bootloader unlocked: Yes". and good luck with it
You don't need to unlock your bootloader to Root your phone. You can downgrade to .58 using Flashtool or WontanServer and then root through Zergrush method
ashwinmudigonda said:
Hey all,
I got an Xperia Mini and want to root it. I have read through the forum and threads and I think I have an idea, but I want confirmation.
I have the 4.0.2.A.0.62 kernel.
The help here said that I must follow the instructions of the tutorial here. My questions are:
1) It says Please note that this is only applied to devices with unlocked bootloader. Is my phone's bootloader unlocked as is now? Do I have to do anything to unlock?
2) I don't understand the second step properly. Do I turn the phone off. Hold the volume button and while holding it, attach the USB cable to the PC? Does that put the phone in fastboot mode? What about any drivers the computer would need to talk to the phone?
When I use the phone's dialer app, there are these things in the corners when I am talking and I end up tapping the hold button often. I want to get rid of that. Is there a way to do that?
Thanks for any help
Click to expand...
Click to collapse
Heres a way to root .62
http://forum.xda-developers.com/showthread.php?t=1626215
Happy rooting !
Sent from my ST15i using XDA

RELOCK BOOTLOADER INSTRUCTIONS Z Ultra C6802

RELOCK BOOTLOADER INSTRUCTIONS
If you want to update through sony's service, we must relock BOOTLOADER for it, this article will guide you want to go back to the original
1./ Download C68XX: http://yadi.sk/d/uxZBDZ_SKyGrN
2./ Unzip copy the path "C: \ FlashTool \ devices"
3./ Open FlashTool.exe click BLU (turn off phone 30 seconds volum button and plug usb) finished it will show up for you including IMEI relocker table and bootloader unlocker key
4./ Click on the button a few seconds after the completion relocker
Now you can update directly through Sony's servcie. :good:
bad english, hope you understanding
This guide will help for many people !
anyone tested yet ?
Safar_Ibrahim said:
anyone tested yet ?
Click to expand...
Click to collapse
Work 100%, test ok
hoaianh2007 said:
Work 100%, test ok
Click to expand...
Click to collapse
Does restoring this mean it appears unrooted to Sony for warranty purposes ?
will this allow us to get X-reality back also?
p.s. the download link doesn't work
Zuber said:
Does restoring this mean it appears unrooted to Sony for warranty purposes ?
Click to expand...
Click to collapse
Doubt it. DRM keys were wiped out during initial unlock, as I understand it.
hoaianh2007 said:
RELOCK BOOTLOADER INSTRUCTIONS
If you want to update through sony's service, we must relock BOOTLOADER for it, this article will guide you want to go back to the original
1./ Download C68XX: http://yadi.sk/d/bNIpukky8MPY8
2./ Unzip copy the path "C: \ FlashTool \ devices"
3./ Open FlashTool.exe click BLU (turn off phone 30 seconds volum button and plug usb) finished it will show up for you including IMEI relocker table and bootloader unlocker key
4./ Click on the button a few seconds after the completion relocker
Now you can update directly through Sony's servcie. :good:
bad english, hope you understanding
Click to expand...
Click to collapse
Where did you get working drivers for FlashTool ? I installed the PC companion and it recognizes the C6802 no problem but in FlashTool it doesn't recognize nor have support for the Ultra ....
crippenx said:
Where did you get working drivers for FlashTool ? I installed the PC companion and it recognizes the C6802 no problem but in FlashTool it doesn't recognize nor have support for the Ultra ....
Click to expand...
Click to collapse
maybe you have done something wrong first step. trying....
Yesterday I re-locked the bootloader using this process, everything went fine, I have a locked bootloader now. Today I am trying to unlock it again following the Sony procedure. Everything goes fine and I get the OK confirmation in fastboot, after that the phone will enter in an endless reboot loop.
Am I doing something wrong?, is there a way to get out of the boot loop?, or I should follow different process to unlock the bootloader now?, thanks
brosenz said:
Yesterday I re-locked the bootloader using this process, everything went fine, I have a locked bootloader now. Today I am trying to unlock it again following the Sony procedure. Everything goes fine and I get the OK confirmation in fastboot, after that the phone will enter in an endless reboot loop.
Am I doing something wrong?, is there a way to get out of the boot loop?, or I should follow different process to unlock the bootloader now?, thanks
Click to expand...
Click to collapse
wish I could help ya, I can't even get flashtool to recognize the Xperia ZU -- which drivers did you use? I don't see the ZU listed as supported in the drivers section ...
as for your problem -- did you use the same key Sony email'ed you the first time or asked the website to generate a new one? As I understand it, the first unlock also deleted the DRM keys .. not sure if that was used somehow to calculate the KEY it generated (kinda like a hash check?) shrugs -- I know that Re-locking your bootloader did NOT restore those keys ... not unless you backed it all up first with that backup app that's on the dev section.
G'luck --
crippenx said:
wish I could help ya, I can't even get flashtool to recognize the Xperia ZU -- which drivers did you use? I don't see the ZU listed as supported in the drivers section ...
as for your problem -- did you use the same key Sony email'ed you the first time or asked the website to generate a new one? As I understand it, the first unlock also deleted the DRM keys .. not sure if that was used somehow to calculate the KEY it generated (kinda like a hash check?) shrugs -- I know that Re-locking your bootloader did NOT restore those keys ... not unless you backed it all up first with that backup app that's on the dev section.
G'luck --
Click to expand...
Click to collapse
Disable usb debugging and Flashtool will recognise ur device (pc compainian must be installed)
And u mean do TA restore before again unlocking boot loader? So unlock, lock and again unlock (with Sony method) will brick device?
Is there a way to unlock with Flashtool?
Sent from my C6802 using Tapatalk 4
newstar said:
Disable usb debugging and Flashtool will recognise ur device (pc compainian must be installed)
And u mean do TA restore before again unlocking boot loader? So unlock, lock and again unlock (with Sony method) will brick device?
Is there a way to unlock with Flashtool?
Sent from my C6802 using Tapatalk 4
Click to expand...
Click to collapse
Well I am a bit confused as to what you are asking and why ----
You mention a TA restore --- that would imply you did a TA BACKUP *before* unlocking bootloader --- correct?
If that is the case, why did you RE-lock the bootloader with the procedure in this thread .. you could/should have just done TA Restore. The procedure here is just for us saps who unlocked the BL via Sony method.
Now .. having said that ... I *believe* that you can still do a TA Restore (if you did a Backup obviously) -- and it should bring everything back to square 1 .. but since I never got to do it, I can't say I've tested this. Why not ask in that thread, the developer seems to have tested out a few diff scenarios successfully.
Cheers
Ahh you mean Ta restore will auto lock the boot loader.. that is what I understand..
Exactly I have Ta backup before unlock boot loader
Regards
P.s and then I can again unlook boot loader from Sony method using that first email keys...
Right?
Sent from my C6802 using Tapatalk 4
newstar said:
Ahh you mean Ta restore will auto lock the boot loader.. that is what I understand..
Exactly I have Ta backup before unlock boot loader
Regards
P.s and then I can again unlook boot loader from Sony method using that first email keys...
Right?
Sent from my C6802 using Tapatalk 4
Click to expand...
Click to collapse
Yes, exactly. If you have a TA Backup before unlock, you're good
And yes you should be able to unlock again with original keys.
One thing -- why would you even WANT to unlock the BL? rooting the phone has been achieved now without unlocking the bootloader -- there's no advantage to unlocking it now.
cheers!
Custom recoveries are great fun
Sent from my iPhone using Tapatalk
newstar said:
Custom recoveries are great fun
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
Are there any custom ROMs or recoveries available yet?
......and.....iphone.... seriously
vinokirk said:
Are there any custom ROMs or recoveries available yet?
......and.....iphone.... seriously
Click to expand...
Click to collapse
Haha....
For c6802 custom recoveries may be come soon
Sent from my C6802 using Tapatalk 4
newstar said:
Haha....
For c6802 custom recoveries may be come soon
Sent from my C6802 using Tapatalk 4
Click to expand...
Click to collapse
I do believe there's one available now.
corrado85 said:
will this allow us to get X-reality back also?
p.s. the download link doesn't work
Click to expand...
Click to collapse
DRM keys lost, only way is to have done a TA backup before unlock. If you didn't you loosed it, only can hope devs find a way to get it back without the DRM keys.
vinokirk said:
I do believe there's one available now.
Click to expand...
Click to collapse
Available but not working yet, having trouble with the new .IMG for new s800 will take some time.
Sent from my Nexus 7 using xda app-developers app

[Q] Xperia Z Ultra bootlloader/Root questions

Hello everyone.
I had posted this in the Z forum, not realizing there was a Z Ultra forum. So I will just quote my previous post and add some info at the end:
Hello guys. New guy here with an Xperia Z Ultra phone.
I'm trying to load the Paranoid Android custom ROM.
Had a couple of questions:
1. I went thru Sony's instructions to unlock the bootloader. When I ran the fastboot -i 0x0fce oem unlock (e-mail code), the first error message I got was "FAILED - Remote - Command did not succeed". So I tried the exact command again, and then I got "FAILED - Remote: The device is already rooted".
I have searched high and low, and cannot seem to find any way to verify that the bootloader is now in fact unlocked.
2. Reading the instruction on how to install CWM/TWRP recovery menus, Every single list of instructions includes the following "This tutorial is only for Sony Xperia Z Ultra with 510 and 493 LTE firmware. Do not use it for any other carriers or variants"
Again, I have searched high and low to find a way to confirm what firmware version I have. All I know is I have the C6806 model, with the build number: 14.2.A.0.290
So can someone please help out a very confused guy here? I don't want to brick my phone by accident
So far it's still working ok
Click to expand...
Click to collapse
So far, after doing some major searching, I seem to have found that I currently have "290" Firmware, and that this Firmware is currently NOT able to be rooted. Is this correct?
Also, I still have not found a way to verify wether the boot loader actually did unlock or not. From what I have been able to read, it seems that if a proper boot loader was in fact, unlocked, it would have wiped all the data on my phone along with the SD card data.
So far, it seems everything on my phone is intact. So does this mean the boot loader unlock command failed for me? If so, why did I get the reply "this device is already rooted?"
I can't believe how difficult it is to root a damn Android phone! Jailbreaking an Apple device is 10 times easier!
First of all, it's usually pretty easy to root Android devices. In most cases it's only a simple click, but sony has done a good(?) job at fixing exploits, so it does it much harder for us.
Second, you can check if your bootloader is locked or unlocked by opening the dialer and insert *#*#7378423#*#*, go to "Service Info" and then "Configuration". If your bootloader is unlocked, it should say "Rooting status: Bootloader unlocked: Yes". It's easier to use Flashtool to unlock the bootloader if you're having issues using a terminal.
You'll find the rest here (including bootloader unlocking). If you need some help, ask in that thread.
If you aren't boot loader unlocked then "BACKUP TA PARTITION" from My Lord's guide @LordManhattan
Just incase you need to re-lock it for service
LordManhattan said:
First of all, it's usually pretty easy to root Android devices. In most cases it's only a simple click, but sony has done a good(?) job at fixing exploits, so it does it much harder for us.
Second, you can check if your bootloader is locked or unlocked by opening the dialer and insert *#*#7378423#*#*, go to "Service Info" and then "Configuration". If your bootloader is unlocked, it should say "Rooting status: Bootloader unlocked: Yes". It's easier to use Flashtool to unlock the bootloader if you're having issues using a terminal.
You'll find the rest here (including bootloader unlocking). If you need some help, ask in that thread.
Click to expand...
Click to collapse
First of all it' pretty damn complicated and unrewarding to root a Sony device. Not all android but Sony definately. We checked, bootloader is unlockable. We unlocked and relocked bootloader prevoiusly because there is no robust, easy-to-install ROM for ZU. But time to time we try to root it.
Now, the question is the same: what should we do to re-unlock the bootloader if anything is OK, but flashtool says "Command did not succeed" for the first time and "Device is already rooted" for subsequent times at unlocking?
Please write some advice about the question, not about TA backup and your success. Thx!
Champdor said:
First of all it' pretty damn complicated and unrewarding to root a Sony device. Not all android but Sony definately. We checked, bootloader is unlockable. We unlocked and relocked bootloader prevoiusly because there is no robust, easy-to-install ROM for ZU. But time to time we try to root it.
Now, the question is the same: what should we do to re-unlock the bootloader if anything is OK, but flashtool says "Command did not succeed" for the first time and "Device is already rooted" for subsequent times at unlocking?
Please write some advice about the question, not about TA backup and your success. Thx!
Click to expand...
Click to collapse
Oh, are we demanding help now?
Bootloader unlocking is a straight forward process. I've had a couple of strange errors in Flashtool while trying to unlock the bootloader, but just close Flashtool and try again. Also be sure to be on the latest version of Flashtool.
LordManhattan said:
Oh, are we demanding help now?
Bootloader unlocking is a straight forward process. I've had a couple of strange errors in Flashtool while trying to unlock the bootloader, but just close Flashtool and try again. Also be sure to be on the latest version of Flashtool.
Click to expand...
Click to collapse
No sir, not at all. I wrote please, no demanding. Well yes, I'm a bit picky because there were no answer and I usually find some on XDA. Besides I used custom roms on Samsung devices for years (SGS2, SGN, SGN2) and I was disapponted when I bought my XZU that there are very few roms and I couldn't use them (I managed with very hard work to go back to stock in 9 hours after unsuccesful flashing).
So there is some basic problem every time. Like trying to root but cannot re-unlock because of some mysterious errors with no solutions.
Enough of my problems, your answer is much appreciated, will try to re-unlock some time. Thx!
Champdor
Champdor said:
No sir, not at all. I wrote please, no demanding. Well yes, I'm a bit picky because there were no answer and I usually find some on XDA. Besides I used custom roms on Samsung devices for years (SGS2, SGN, SGN2) and I was disapponted when I bought my XZU that there are very few roms and I couldn't use them (I managed with very hard work to go back to stock in 9 hours after unsuccesful flashing).
So there is some basic problem every time. Like trying to root but cannot re-unlock because of some mysterious errors with no solutions.
Enough of my problems, your answer is much appreciated, will try to re-unlock some time. Thx!
Champdor
Click to expand...
Click to collapse
Oh, i get that. I came from Samsung myself, and this is my first Sony device ever, so I've had some issues myself. I've gotten the same error message(s) as you before, and i think i restarted Flashtool and rebooted my Ultra and it was back to normal again - i think, but it "fixed itself" after trying a couple of times, so don't give up. It's also important to always be on the latest version of Flashtool.
It would also help us if you could tell us what you're trying to achieve, so you don't end up spending 9 hours on something that takes 5 minutes
@Champdor
From what I can make out you have never managed root your phone or back up the TA. If the latter is true then there is very little point in relocking the bootloader.
Yes the process is a little harder than Samsung, but the last device I rooted was a ZTE, and that was even harder to root and flash from what I can remember (yes this is my first Sony device as well, and I will buy another...)
Take you time and read the stickies that we have written and all should go well. Don't be afraid to ask (intelligent) questions if you get stuck, and read some more
HELP!
i am in same situation as OP
in past, i unlocked the bootloader then i relocked.
now I like to re-unlock. but I get same errors (i.e. 'command did not suceed' or 'device is already rooted')
i check service menu and it says 'bootloader unlock allowed: yes' meaning its not unlocked yet.
i use latest flashtool and try to unlock but i get error
can any expert help!?
thanks for your help
corrado85 said:
HELP!
i am in same situation as OP
in past, i unlocked the bootloader then i relocked.
now I like to re-unlock. but I get same errors (i.e. 'command did not suceed' or 'device is already rooted')
i check service menu and it says 'bootloader unlock allowed: yes' meaning its not unlocked yet.
i use latest flashtool and try to unlock but i get error
can any expert help!?
thanks for your help
Click to expand...
Click to collapse
I have not had this error so have not tested this, but what happens if you flash a full FTF and wipe everything then try to unlock the BL?
And remember that you can take a backup of the unlocked BL (re member to name it as such) and just flash that to unlock again. Doing it this way you don't get the format that happens when using the unlock code.
I followed this post to downgrade, root, i use Backup TA v9.10 to backup DRM Keys, use Flashtool 0.9.14.0 to unlock Bootloader, then to flash other Rom's (stock and customs), came back to Stock Rom .681, relock the Bootloader with Flastool 0.9.15.0 flashed the last .757 and unlock the Bootloader again with no kind of problems using Flashtool 0.9.15.0....
blueether said:
I have not had this error so have not tested this, but what happens if you flash a full FTF and wipe everything then try to unlock the BL?
And remember that you can take a backup of the unlocked BL (re member to name it as such) and just flash that to unlock again. Doing it this way you don't get the format that happens when using the unlock code.
Click to expand...
Click to collapse
I just flashed C6802 .757 FW using flashtool, and i get same issue
is there a tutorial about backup of the unlocked BL? assuming you meant I have to have own device backup..
this is so confusing at the end :crying:
corrado85 said:
I just flashed C6802 .757 FW using flashtool, and i get same issue
Click to expand...
Click to collapse
I dont know what else to suggest other than rebooting every thing and reinstalling all the drivers
is there a tutorial about backup of the unlocked BL? assuming you meant I have to have own device backup..
this is so confusing at the end :crying:
Click to expand...
Click to collapse
You just back it up as you would for a locked BL. Just remember to make sure you name them well so you know which is the locked one and the unlocked one.
NEVER use a TA backup from another phone, you WILL HARD BRICK IT
Lc1975 said:
I followed this post to downgrade, root, i use Backup TA v9.10 to backup DRM Keys, use Flashtool 0.9.14.0 to unlock Bootloader, then to flash other Rom's (stock and customs), came back to Stock Rom .681, relock the Bootloader with Flastool 0.9.15.0 flashed the last .757 and unlock the Bootloader again with no kind of problems using Flashtool 0.9.15.0....
Click to expand...
Click to collapse
problem is i get message 'device already rooted' when i enter my bootloader key using flashtool as well
---------- Post added at 03:42 PM ---------- Previous post was at 03:40 PM ----------
blueether said:
I dont know what else to suggest other than rebooting every thing and reinstalling all the drivers
You just back it up as you would for a locked BL. Just remember to make sure you name them well so you know which is the locked one and the unlocked one.
NEVER use a TA backup from another phone, you WILL HARD BRICK IT
Click to expand...
Click to collapse
ahh ok, in that case, i do not have a backed up unlocked bootloader rom
corrado85 said:
problem is i get message 'device already rooted' when i enter my bootloader key using flashtool as well
---------- Post added at 03:42 PM ---------- Previous post was at 03:40 PM ----------
ahh ok, in that case, i do not have a backed up unlocked bootloader rom
Click to expand...
Click to collapse
Did you tried:
*#*#SERVICE#*#*
and confirm that the Bootloader is unlock?
Lc1975 said:
Did you tried:
*#*#SERVICE#*#*
and confirm that the Bootloader is unlock?
Click to expand...
Click to collapse
It states
Rooting status
Bootloader unlocked allowed:Yes
corrado85 said:
It states
Rooting status
Bootloader unlocked allowed:Yes
Click to expand...
Click to collapse
When you try to unlock the Bootloader.. What button or icon do you click?
The one who has the padlock or BLU?
Lc1975 said:
When you try to unlock the Bootloader.. What button or icon do you click?
The one who has the padlock or BLU?
Click to expand...
Click to collapse
I choose which states 'BLU'
actually I do get the option to click on padlock but i dont know what to do there
corrado85 said:
I choose which states 'BLU'
actually I do get the option to click on padlock but i dont know what to do there
Click to expand...
Click to collapse
The padlock is to root the device..
Sorry but i can't help you much more then this... I don't have much knowledge to go foward...
Try to start from scratch..
Downgrade...
Root...
Try to unlock the Bootloader
And update to the latest...
root didnt work
Hello , i want to root my phone z ultra 6833 .757 i watch this video youtube . com/watch?v=uFSeSe8gQOY
i unlock bootloader after this install 757.img by flashtool so i can open recovery but after this i didnt find the same file he run i try run supersu.zip but the phone havent rooted plz what the problem

Please how can know the Bootloader lock or unlock

hi guys
im new in Sony Xperia group
i want know if my Z2 bootloader lock or unlock?
i got it from uk
Open the phone app & enter *#*#7378423#*#* the look for configuration & tap that, that should tell you if bootloader is unlockable, if it says yes then you good to go, if it says no then you out of luck I'm afraid.
BanziBaby said:
Open the phone app & enter *#*#7378423#*#* the look for configuration & tap that, that should tell you if bootloader is unlockable, if it says yes then you good to go, if it says no then you out of luck I'm afraid.
Click to expand...
Click to collapse
if say Bootloader unlock allowed: yes
im lucky or not
You can use flashtool (not emma) to bootloader unlock
Flashtool.net is the place to get flashtool from, you may need drivers Fastboot Flashmode Z2 dev drivers
I think you dont need in newerversions
Im not sure
@DinarQ8 yeah mate that means you can unlock the bootloader
@Envious_Data Do you still need to get unlock key though sony's developer site to unlock with FlashTool? Also what is the best & easiest way to root the phone? I'm used to galaxy devices so sony unlock & root is new to me.
BanziBaby said:
@DinarQ8 yeah mate that means you can unlock the bootloader
@Envious_Data Do you still need to get unlock key though sony's developer site to unlock with FlashTool? Also what is the best & easiest way to root the phone? I'm used to galaxy devices so sony unlock & root is new to me.
Click to expand...
Click to collapse
Yes, flashtool does the normal terminal stuff for you
You still have to get IEME and unlock code
It will give instructions
Cheers, does Flashtool also easily root it or do you need a custom kernel for root to work?
Sorry for all the questions, just want to make sure I do things right & don't end up with a sexy brick :fingers-crossed:
BanziBaby said:
Cheers, does Flashtool also easily root it or do you need a custom kernel for root to work?
Sorry for all the questions, just want to make sure I do things right & don't end up with a sexy brick :fingers-crossed:
Click to expand...
Click to collapse
You can use Flashtool to root, but not via its root function. Put the phone in fastboot mode and flash Doomlord's CWM+kernel package (I installed v.02 since my phone is on firmware .55) in Flashtool (using the fastboot option that pops up when you click the lightning button). Then reboot into CWM recovery and flash SuperSU. Then reboot into the system and install busybox into /xbin. You should be good then.
So if it says bootloader unlock is not allowed does that mean there is no possible way to unlock it and root the device?
Sent From My Xperia Z2.
it said the same thing on my xperia s but i still could unlock
i dont recomend trying untill you get more info
Sent from my D6503 using XDA Premium 4 mobile app

Problem unlocking Bootloader.

Hi all, I have a problem,so I aks for a little help. I was unlocking bootloader to follow the guide for rooting but when I use flashtool to unlock the bootloader I can't put the unlocking code received from Sony cause flashtool open a windows where a code of 4 number is prewrited where I have to put the Sony's Unlocking code. And naturally I can't overwrite/erase it. Is some way to fix possible?
Thanks.
Kaminari_3DS said:
Hi all, I have a problem,so I aks for a little help. I was unlocking bootloader to follow the guide for rooting but when I use flashtool to unlock the bootloader I can't put the unlocking code received from Sony cause flashtool open a windows where a code of 4 number is prewrited where I have to put the Sony's Unlocking code. And naturally I can't overwrite/erase it. Is some way to fix possible?
Thanks.
Click to expand...
Click to collapse
Can you show a screenshot? I've never seen that happen in Flashtool. You could also test it with fast boot in a regular terminal.
levone1 said:
Can you show a screenshot? I've never seen that happen in Flashtool. You could also test it with fast boot in a regular terminal.
Click to expand...
Click to collapse
Thank you for reply. Sure, here a link of my screenshot: //postimg.cc/Jyx3bJBg
During the process this windows will open with that unlocking code and I can't modify it to put the bootloader unlocking code I receveid. (>_< )
P.s. Sorry for incompleted website link but I need almost 10 post to put one. I lost my old xda account credential and opened a new one cause this trouble.
Kaminari_3DS said:
Thank you for reply. Sure, here a link of my screenshot: //postimg.cc/Jyx3bJBg
During the process this windows will open with that unlocking code and I can't modify it to put the bootloader unlocking code I receveid. (>_< )
P.s. Sorry for incompleted website link but I need almost 10 post to put one. I lost my old xda account credential and opened a new one cause this trouble.
Click to expand...
Click to collapse
Strange. First thing to do is update Flashtool. Then try with new version.
I haven't used it to unlock the bootloader for a long time, so can't really remember the details, but I know it worked fine, and stored the code.
Maybe try double-click...
Hi,updated flashtool but not solved,also trying other solutions to modify the code but still not possible. >_<
Finally unlocked ,thanks for help.
Now I can work for root!
Kaminari_3DS said:
Finally unlocked ,thanks for help.
Now I can work for root!
Click to expand...
Click to collapse
Curious - what was the deal?
Still having same problem using flashtool but after many try and reflashing other official roms,by shell, the unlocking code worked.

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