Unable to unlock bootloader - Xperia Z2 Q&A, Help & Troubleshooting

I just bought the Z2 phone which is UNBRANDED and check that the BOOTLOADER can be UNLOCKED under the configuration menu. The phone is rooted which I verified through a program. Using Android 4.4.2, Build 17.1.2.A..0.314
Tried the flashtools to unlock it
Flashtools - gives me the error that the bootloader cannot be unlocked. Tells me to unplug the phone and turn it on.
Any help?

Try 2-3 times.
But first root with easyroot then backup the TA partition then while in root, unlock. Everything will work.
Sent from my Xperia Z2 using XDA Premium 4 mobile app

murtadha50 said:
I just bought the Z2 phone which is UNBRANDED and check that the BOOTLOADER can be UNLOCKED under the configuration menu. The phone is rooted which I verified through a program. Using Android 4.4.2, Build 17.1.2.A..0.314
Tried the flashtools to unlock it
Flashtools - gives me the error that the bootloader cannot be unlocked. Tells me to unplug the phone and turn it on.
Any help?
Click to expand...
Click to collapse
1. install all drivers
2. run flashtool as admin
3. make sure your imei code was right
4. make sure your unlock code was right
5. try again a few times
misc. check if your bootloader is unlockable in your service menu, does it say rooting is alowed (i dont remember what menu this was in):*#*#SERVICE#*#* in your dialier

Envious_Data said:
1. install all drivers
2. run flashtool as admin
3. make sure your imei code was right
4. make sure your unlock code was right
5. try again a few times
misc. check if your bootloader is unlockable in your service menu, does it say rooting is alowed (i dont remember what menu this was in):*#*#SERVICE#*#* in your dialier
Click to expand...
Click to collapse
Yes rooting is allowed
Im using flashtool only as admin not the official method and tried alot with no luck

Iv’e tried to unlock via flashtool as above but it tells me it cannot be officially unlocked, before doing this I checked on the phone and it says bootloader unlockable yes

You might want to try the "old-fashion" way?
http://forum.xda-developers.com/showthread.php?t=2440597

You have to root first to backup TA partition (or don't haha but please do it is essentially your warranty)
Then go to the Sony Dev page to get your unlock code. You need your imei. Then, use that in fastboot(not flashtool oops). The instructions are in the Sony page. This WILL wipe your phone so you might wanna tibu stuff into your sdcard
Sent from my LG-D802

linjes said:
You have to root first to backup TA partition (or don't haha but please do it is essentially your warranty)
Then go to the Sony Dev page to get your unlock code. You need your imei. Then, use that in fastboot(not flashtool oops). The instructions are in the Sony page. This WILL wipe your phone so you might wanna tibu stuff into your sdcard
Sent from my LG-D802
Click to expand...
Click to collapse
I have backuped TA
If i use the official way from sony will it be a problem if I want to relock it again for warranty purposes or if occured faults for the device?
Do Sony know that i have unlocked the bbotloader then it will void warrant even if I lock it again?

murtadha50 said:
I have backuped TA
If i use the official way from sony will it be a problem if I want to relock it again for warranty purposes or if occured faults for the device?
Do Sony know that i have unlocked the bbotloader then it will void warrant even if I lock it again?
Click to expand...
Click to collapse
No idea but I doubt it. The unlock process cannot send a notification to Sony, but I am not sure what their policy is on you obtaining the unlock code. Should be fine though
Sent from my LG-D802

murtadha50 said:
I have backuped TA
If i use the official way from sony will it be a problem if I want to relock it again for warranty purposes or if occured faults for the device?
Do Sony know that i have unlocked the bbotloader then it will void warrant even if I lock it again?
Click to expand...
Click to collapse
I would suspect that if Sony wanted to be arses about it that they will take the obtaining an unlock code as proof it was unlocked, do you tick a box to say you accept you are voiding your warranty when you request the code? But it doesn't make a difference what method you use as both require the unlock code from Sony.

Related

Unlocking bootloader from Live with Walkman

I researched about the matter, and reached some conclusions:
- I don't want to use the TEST POINTER method, I really don't care about OTA updates or Track ID app (as far as I know there are no more consequences), Shazam and Soundhound do the same
- I would like to unlock the bootloader in some manner that, if I need to relock the warranty will still be valid (same goes for root, but I guess flashing an original firmware unroots the device)
That said, found the official instructions to unlock the BL, but still have the main question: is it the procedure completely reversible? Also, is it free?
Thanks in advance. Also really appreciate if someone corrects something wrong I said.
Maxxd01 said:
I researched about the matter, and reached some conclusions:
- I don't want to use the TEST POINTER method, I really don't care about OTA updates or Track ID app (as far as I know there are no more consequences), Shazam and Soundhound do the same
- I would like to unlock the bootloader in some manner that, if I need to relock the warranty will still be valid (same goes for root, but I guess flashing an original firmware unroots the device)
That said, found the official instructions to unlock the BL, but still have the main question: is it the procedure completely reversible? Also, is it free?
Thanks in advance. Also really appreciate if someone corrects something wrong I said.
Click to expand...
Click to collapse
you can still relock your bootloader and receive official sony updates, but the problem is, you loose DRM(in which if sony finds out, you still lose warranty).
i found this thread and said that DRM cannot be restored :/
I don't know about non free relocking if it will be able to restore DRM though.
oh and by the way, this thread provides the easiest way to unlock and relock your bootloader for free.
goodluck and enjoy
DRM cannot be restored at all.
Install TrackID from market and it will work.
Bootloader can be relocked, doesn't matter how you unlocked.
And yes, it is free.
Sent from my WT19i using xda premium
Someguyfromhell said:
DRM cannot be restored at all.
Install TrackID from market and it will work.
Bootloader can be relocked, doesn't matter how you unlocked.
And yes, it is free.
Sent from my WT19i using xda premium
Click to expand...
Click to collapse
Ok, so I suppose the DRM Keys only affect the OTA updates (how should we care if we are unlocking BL for custom ROMs
So, I suppose if I have a problem on my Live (but it still turns on), I apply an OFW and then relock it, it's a matter of luck if the techical assistance is going to check if the DRM is still valid or not.
What method do you advice to unlock the BL?
Maxxd01 said:
Ok, so I suppose the DRM Keys only affect the OTA updates (how should we care if we are unlocking BL for custom ROMs
So, I suppose if I have a problem on my Live (but it still turns on), I apply an OFW and then relock it, it's a matter of luck if the techical assistance is going to check if the DRM is still valid or not.
What method do you advice to unlock the BL?
Click to expand...
Click to collapse
Method, pick which is better for you. I used official method, no messing with cables.
Sent from my WT19i using xda premium
Unlock it the way you prefer to it does not matter it will lose warranty any way it is just luck if they will check it or not at the service center. Any way it is really hard to completely brick your phone unless you don't know what you are doing. The main difference is with the test point method you are able to update using seus without problems and it looks more complicated than it really is I only used a clip
just a question about unlocking thru official method.
since you would have to get the unlock key directly from Sony.
would they be able to track your phone since you will be giving them some details like your name, IMEI, email etc. to get the unlock code?
do the service centers have access to that database?
There are no Sony Mobile Service Centers, phones need to be taken back to shop and they use service of specific mobile repair shop.
Depending on what reason you need to take it back, they might want to check it or not. No one has so far done this, so we have no information.
What is DRM and Track ID ?
I want to unlock bootloader my phone, but I am still confused, what is the risk of a official bootloader from sony ? What is DRM and Track ID ? what is its usefulness for wt19i?
sorry my english is not good
dianfajar said:
I want to unlock bootloader my phone, but I am still confused, what is the risk of a official bootloader from sony ? What is DRM and Track ID ? what is its usefulness for wt19i?
sorry my english is not good
Click to expand...
Click to collapse
There is no risk either way the difference is that with the official method you will lose your drm (Digital rights management) and the official support of track id (the app from se that you use to search for the info of a song playing in the radio or the tv etc.) meanwhile using the test point method you will not lose them. If you want to install a custom rom like cm9 or miui you need to unlock your bootloader to be able to flash the custom kernels those roms need.
can you save DRM with CWM backup before unlocking bootloader?
manilu001 said:
can you save DRM with CWM backup before unlocking bootloader?
Click to expand...
Click to collapse
Nope, DRM is not saved in CWM backup.
Sent from my WT19i using xda premium
Thanks in advance for all helpfull answers.
I just want to understand the following. Some Live's come with "unlock bootloader allowed"="no" others ="yes". What does that means and more important: what are the implications?
I cannot understand the difference because as fair as I understand right now, all live's (branded/sim unlocked or not) are unlockable (referring to bootloader).
Maxxd01 said:
Thanks in advance for all helpfull answers.
I just want to understand the following. Some Live's come with "unlock bootloader allowed"="no" others ="yes". What does that means and more important: what are the implications?
I cannot understand the difference because as fair as I understand right now, all live's (branded/sim unlocked or not) are unlockable (referring to bootloader).
Click to expand...
Click to collapse
When they come with boot loader unlock : no it is a branded sim locked phone in which case you can unlock bootloader but you will have no access to fastboot meaning you are unable to flash a custom kernel, also there will be no way you can officially unlock the bootloader so will have to use the test point method and of course you will need to pay to fully unlock your phone to be able to access fastboot and flash custom kernels.
Did I miss something??
ginryu said:
When they come with boot loader unlock : no it is a branded sim locked phone in which case you can unlock bootloader but you will have no access to fastboot meaning you are unable to flash a custom kernel, also there will be no way you can officially unlock the bootloader so will have to use the test point method and of course you will need to pay to fully unlock your phone to be able to access fastboot and flash custom kernels.
Did I miss something??
Click to expand...
Click to collapse
So, for sim locked branded phones ("no")
- To unlock the bootloader: test point method
- Access fastboot: use (and pay) through wotan server
Am I right? I never though that was two different problems.
Maxxd01 said:
So, for sim locked branded phones ("no")
- To unlock the bootloader: test point method
- Access fastboot: use (and pay) through wotan server
Am I right? I never though that was two different problems.
Click to expand...
Click to collapse
I'm not really sure about Wotan server however I'm pretty sure about setool and omnius and if you are willing to pay the phone will be fully unlocked (bootloader, sim and fastboot) with one procedure using the test point method.
ginryu said:
When they come with boot loader unlock : no it is a branded sim locked phone in which case you can unlock bootloader but you will have no access to fastboot meaning you are unable to flash a custom kernel, also there will be no way you can officially unlock the bootloader so will have to use the test point method and of course you will need to pay to fully unlock your phone to be able to access fastboot and flash custom kernels.
Did I miss something??
Click to expand...
Click to collapse
So, I'm curious, if I have branded sim lock Live ("no" bootloader) can I install an original firmware without using an official channel? Do I need fastboot access?
I'm asking because I'm almost sure that my carrier will not update the Live to 4.0, so I suppose I have to use some other tool in order to install it.
Maxxd01 said:
So, I'm curious, if I have branded sim lock Live ("no" bootloader) can I install an original firmware without using an official channel? Do I need fastboot access?
I'm asking because I'm almost sure that my carrier will not update the Live to 4.0, so I suppose I have to use some other tool in order to install it.
Click to expand...
Click to collapse
you can debrand (install a generic firmware) your phone using wotan server for free and as i know it will also change your product code so next time and official sony update is available your phone will get it.
thancks! its helps...
another noob question from me
can i relock BL from test point method?
n do i have to flash stock kernel before relock?
i'm using rage kernel right now.
sent from my Walkman

[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

Unable to Unlock Boot-loader :S

Unable to Unlock Boot-loader :S
I have attempted Sonys Method and now flashtool and get the same message saying my device cant be officially unlocked :S
what can i do to get my XZU unlocked?
I have a c6833 i was on 4.3 android but attempted to downgrade to 4.2.2 to attempt to unlock incase its been a firmware issue but now am really confused with what i can do
encryptioncsta said:
Unable to Unlock Boot-loader :S
I have attempted Sonys Method and now flashtool and get the same message saying my device cant be officially unlocked :S
what can i do to get my XZU unlocked?
I have a c6833 i was on 4.3 android but attempted to downgrade to 4.2.2 to attempt to unlock incase its been a firmware issue but now am really confused with what i can do
Click to expand...
Click to collapse
First of all get your self on .532 and root and then back up the TA partition, may save some grief at a latter date.
Then all I can say is try and try again, and make sure that you submitted the correct IMEI to Sony
am now on 5.10 and still doesnt work using any method
encryptioncsta said:
am now on 5.10 and still doesnt work using any method
Click to expand...
Click to collapse
Type in *#*#7378423#*#*
Go to Service Info > Configuration
And check the Rooting Status
Does it say Bootloader Unlock Allowed: No?
hassanmahmood said:
Type in *#*#7378423#*#*
Go to Service Info > Configuration
And check the Rooting Status
Does it say Bootloader Unlock Allowed: No?
Click to expand...
Click to collapse
yeah i done that and i get told "no"
i dunno what else to do now that am being told i cant unlock
I should read your first post better
If it is unlockable then I don't think there is any thing you can do
am confused? why wouldn't i be able to unlock?
Because your device is probably a carrier-linked one... almost every phone bought within the US, if it's not from the manufacturer itself, is locked.
You either will have to live with it, or just sell it and buy an unlockable one directly from Sony.
Sent from my C6833 using Tapatalk

Question about root and unlock bootloader

I have a new xperia z ultra c6806
Read a lot but still confused. ( Not everybody is made equal )
I want to root and back up TA
1 - My understanding is for backing up TA, i need to be rooted. But for rooting I need to be unlocked. But unlocking will erase the TA information. Am I wrong.
2- If I unlock boatloader can I flash back to pure stock for either warranty or returning the device.
Thanks
C6806 eh?
- Open the dialer and dial *#*#7378423#*#*
- Go to Service Info -> Configuration and check what is says under "Rooting status". Does it say Yes or No?
If it says yes, go ahead and downgrade to 532 and root it using Bin4ry's root tool, backup your TA partition and then unlock the bootloader, update to 757 again and flash Jackie's kernel and flash SuperSU. You can find links and what not here.
LordManhattan said:
C6806 eh?
- Open the dialer and dial *#*#7378423#*#*
- Go to Service Info -> Configuration and check what is says under "Rooting status". Does it say Yes or No?
If it says yes, go ahead and downgrade to 532 and root it using Bin4ry's root tool, backup your TA partition and then unlock the bootloader, update to 757 again and flash Jackie's kernel and flash SuperSU. You can find links and what not here.
Click to expand...
Click to collapse
Thanks for the reply
It says " Bootloader unlock allowed: Yes
So I guess, I will follow what you are saying
One thing; don't panic when you're noticing that you're not getting any signal at all (cell, WiFi etc.). That's the way it is when you're downgrading the baseband past .290, but you're only going to be on 532 for a short period of time, so it's no big deal. You'll get your signal back once you're back on 757.
LordManhattan said:
One thing; don't panic when you're noticing that you're not getting any signal at all (cell, WiFi etc.). That's the way it is when you're downgrading the baseband past .290, but you're only going to be on 532 for a short period of time, so it's no big deal. You'll get your signal back once you're back on 757.
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Click to collapse
Got 532 installed and unlocked but now cant update to 757.... Pc companion is saying I am uptodate..
There seems to be no link to download 6806 757 firmware
Edit : oofff ... finally got everything working.. That was lot of work...
aalupatti said:
Got 532 installed and unlocked but now cant update to 757.... Pc companion is saying I am uptodate..
There seems to be no link to download 6806 757 firmware
Edit : oofff ... finally got everything working.. That was lot of work...
Click to expand...
Click to collapse
So you figured out that you had to use Flashtool? You backed up TA? And you managed to unlock the bootloader and root?
Don't worry, this is a one time thing. The boring stuff is the downgrading and backup of TA, so since you've backed it up, it's done. If you have to relock your bootloader and un-root for whatever reason and you want to root again, you don't have to do this again. You then have to unlock the bootloader and simply flash a kernel.
Sent from my C6833
LordManhattan said:
So you figured out that you had to use Flashtool? You backed up TA? And you managed to unlock the bootloader and root?
Don't worry, this is a one time thing. The boring stuff is the downgrading and backup of TA, so since you've backed it up, it's done. If you have to relock your bootloader and un-root for whatever reason and you want to root again, you don't have to do this again. You then have to unlock the bootloader and simply flash a kernel.
Sent from my C6833
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Click to collapse
My issue was downgrading and some driver issues with windows 8. All went well..
However now when I reboot I get this error " System UID's are inconsistent, you need to wipe your data partition or your device will be unstable"
But fixed that using twrp
I cant believe how good quality the phone hardware is.. Was using samsung for the last few years...
I am waiting for the next generation of z ultra and going to get that too.... Wish they introduce qi charging...

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.
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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

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