Bootloader Unlock! - Xperia Z2 Q&A, Help & Troubleshooting

I needed a help!
actually i unlocked my bootloader. tried the cm rom!
again went to stock 4.4.2 .314fw.. and locked the bootloader!
now i want to try the miui rom for our z2 but when i try to unlock the bootloader again it says already rooted!
now suppose its rooted or unlocked. i try to flash a kernel, flashtool gives an error that cannot execute the command.
why so? whats the solution?

Locking on MIUI ROM is not possible. Restore tour TA partition that will relock.
Relock will only work with stock ROM.
Sent from my Xperia Z2 using XDA Premium 4 mobile app

bluheart said:
Locking on MIUI ROM is not possible. Restore tour TA partition that will relock.
Relock will only work with stock ROM.
Sent from my Xperia Z2 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
i have the stock rom bro.. its updating via ota too!
i want to unlock n flash the kernel. but it says command not possible!

Related

[Q] how to flash, backup, ROM's and EFS partition

Hi I recently bought the sony ericsson WT19i (Live), now I want to flash cyanogenmod but i don't know how. I read something about unlocking bootloader bu I can only find tutorials for Xperia range phone's also is there a way to backup my current ROM and EFS partition?.
I have alot of expirience with android so just some links should do.
Also is there a way to Re-Lock the bootloader?
You must unlock bootloader first. Then flash custom rom, and install cm using update zip.
Sent from my WT19i using XDA App
Thanks but unlocking avoids warranty and no official updates. Is it worth it?
From what i understand with a locked bootloader you cant boot into recovery, right?
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RafayelG said:
Thanks but unlocking avoids warranty and no official updates. Is it worth it?
From what i understand with a locked bootloader you cant boot into recovery, right?
Sent from my WT19i using XDA App
Click to expand...
Click to collapse
Ssory my english is bad. I am russian user.
With unlocked bootloder you can not oficially update you device.
You can install cwm to locked stok rom and boot into recovery.
Unlock bootloader only need to flash modded kernel.
after unlocking you can lock bootloader. Drm key's not restore
Sent from my WT19i using XDA App
Ok thanks i'll wait till ics update.
Sent from my WT19i using XDA App

Bootloader Unlock risks

Hey there guys!
i know there are many how to threads aabout unlocking bootloader but i dont want to get back to stock and all that stuff.
Is there a way to unlock bootloader with my actual rom (fera jaf)?
This should be Q & A,please move.
Sent from my Desire HD using xda premium
OssiB said:
Hey there guys!
i know there are many how to threads aabout unlocking bootloader but i dont want to get back to stock and all that stuff.
Is there a way to unlock bootloader with my actual rom (fera jaf)?
Click to expand...
Click to collapse
Yes, i believe it's possible with the latest version of flashtool (+ update).
The safest way though, is to revert to stock (do a backup of your current rom&setup of course) then perform the unlock.
Sent from my CM9 es209ra using xda app-developers app
Alright alright.
But,if i backup my current rom (which is for LB) then unlock my BL and then restore my backup of my LB Rom,i will have a Rom for LB on my phone with ULBL.
OssiB said:
Alright alright.
But,if i backup my current rom (which is for LB) then unlock my BL and then restore my backup of my LB Rom,i will have a Rom for LB on my phone with ULBL.
Click to expand...
Click to collapse
yes it will work.. you can have unlock bootloader and can flash with lockbootloader ROM's

What steps require to re-lock bootloader (Xperia S)

My Xperia S is unlocked bootloader, using [email protected] rom with ICS15 kernel with CWM recovery. If I want to re-lock bootloader what steps needed to flash stock ICS rom. I mean, do I flash stock rom first and than re-lock BL or otherwise. I am asking this because the rom I am using is for unlocked BL therefore when I re-lock the BL there will be conflict which will force the phone to stop working. The kernel I am using will work with stock rom? If someone guide me how to start the process with step-by-step guide. Thanks
javedabbasi said:
My Xperia S is unlocked bootloader, using [email protected] rom with ICS15 kernel with CWM recovery. If I want to re-lock bootloader what steps needed to flash stock ICS rom. I mean, do I flash stock rom first and than re-lock BL or otherwise. I am asking this because the rom I am using is for unlocked BL therefore when I re-lock the BL there will be conflict which will force the phone to stop working. The kernel I am using will work with stock rom? If someone guide me how to start the process with step-by-step guide. Thanks
Click to expand...
Click to collapse
Just flash stock kernel and relock!
Don't forget to hit thank, if i deserve it!
Sent from my LT26i using xda premium
monivan said:
Just flash stock kernel and relock!
Don't forget to hit thank, if i deserve it!
Sent from my LT26i using xda premium
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Click to collapse
Hi monivan. Sorry for my ignorance. The kernel I am using (ICS15) is not stock? If no, from where I get stock kernel and how do I flash it. CWM or Flashtool.
if you have a ftf for stock ics, extract the ftf using winrar or 7zip then look for kernel.sin, flash it via fastboot, or you can flash via flashtool, uncheck everything except kernel.

[Q] Downgrading without unlocking bootloader?

Hi guys!
My Xperia Z Ultra is on the 4.4.2 firmware, but I want to go back to the 4.3.. Can I go back without unlocking the bootloader? Does it work just flash the 4.3 firmware or do I have to unlock the BL?
Thanks.
You can flash 4.3 using flashtool. You don't need an unlocked bootloader. However, you may have to check "wipe data" for this to work.
Sent from my C6802 using XDA Premium 4 mobile app

[Q] I'm Stupid (bootloader locked and flashing)

First of all, I'm spanish, my apologizes of my expresions or misspelling.
That's what I've done:
1 - I've checked if my bootloader was unlockable, and my phone say's: NO
2 - Then I've installed the DualRecovery W/O root and with my phone bootlocked.
3 - Then I've tryed to flash CM11 in TWRP recovery, flashing first the Boot.img via fastboot.
4 - Device in Red Light.
What I can do to woke up my Z2? That's my record 2 hrs to **** my phone. :silly:
Firstly, it's stated in the first post of the CM11 thread that you shouldn't be using dual recovery. If you read the thread further, you'll see that it is recommended to use the recovery in DooMKernel to flash. And this requires unlocked bootloader.
Anyways, you can try using Flashtool to flash a stock firmware. Might be able to recover your phone.
xavisaldana said:
First of all, I'm spanish, my apologizes of my expresions or misspelling.
That's what I've done:
1 - I've checked if my bootloader was unlockable, and my phone say's: NO
2 - Then I've installed the DualRecovery W/O root and with my phone bootlocked.
3 - Then I've tryed to flash CM11 in TWRP recovery, flashing first the Boot.img via fastboot.
4 - Device in Red Light.
What I can do to woke up my Z2? That's my record 2 hrs to **** my phone. :silly:
Click to expand...
Click to collapse
If your BL is locked, you cannot install CM.... coz you cannot install a custom kernel. you should rebuild your phone using SEUS to put a good ROM.
Then you can put whatever ROM you want for LB and root it. but no custom kernel.
http://forum.xda-developers.com/showthread.php?p=53968631
Try here, there is a recover/unbrick tutorial
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
http://forum.xda-developers.com/showthread.php?p=53968631
Try here, there is a recover/unbrick tutorial
Sent from my D6503 using XDA Premium 4 mobile app
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Click to collapse
Hi there,
Is there any way to get root access without unlocking the bootloader. I found some ways in XDA but nothing is clear.
I would really appreciate if you guys can send me a link with a clear tutorial of how to get a new ROM without unlocking the bootloader.
I just got my Z2 which is sim locked (UK) and I can't unlock the bootloader from the official page.
Many thanks,
tux
tuxiqul said:
Hi there,
Is there any way to get root access without unlocking the bootloader. I found some ways in XDA but nothing is clear.
I would really appreciate if you guys can send me a link with a clear tutorial of how to get a new ROM without unlocking the bootloader.
I just got my Z2 which is sim locked (UK) and I can't unlock the bootloader from the official page.
Many thanks,
tux
Click to expand...
Click to collapse
Root For Locked Bootloaders (noted to work fine on all FWs)
http://forum.xda-developers.com/showthread.php?p=53420860
Recovery For locked bootloaders
http://forum.xda-developers.com/showthread.php?t=2785598
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
Root For Locked Bootloaders (noted to work fine on all FWs)
http://forum.xda-developers.com/showthread.php?p=53420860
Recovery For locked bootloaders
http://forum.xda-developers.com/showthread.php?t=2785598
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thanks a lot mate. I'll give a try to the first url, hopefully I won't brake it.
Many thanks,
Tux
Edit. I have 17.1.1.A.0.402. Anyone tried to root it ? It says it doesn't work.
tuxiqul said:
Thanks a lot mate. I'll give a try to the first url, hopefully I won't brake it.
Many thanks,
Tux
Edit. I have 17.1.1.A.0.402. Anyone tried to root it ? It says it doesn't work.
Click to expand...
Click to collapse
Root with the Easy Root Tool, worked like a charm for me : http://forum.xda-developers.com/showthread.php?t=2784900
tuxiqul said:
Hi there,
Is there any way to get root access without unlocking the bootloader. I found some ways in XDA but nothing is clear.
I would really appreciate if you guys can send me a link with a clear tutorial of how to get a new ROM without unlocking the bootloader.
I just got my Z2 which is sim locked (UK) and I can't unlock the bootloader from the official page.
Many thanks,
tux
Click to expand...
Click to collapse
Yeah, working right now, then 3 questions more:
first: the phone comes with a Vodafone rom, I can put some "unbranded" rom? how?
second: I can't unlock my bootloader forever ??
and third: What is the function of recovery mode if I can't flash any cRom? Just backups?
Thanks all ^^
xavisaldana said:
Yeah, working right now, then 3 questions more:
first: the phone comes with a Vodafone rom, I can put some "unbranded" rom? how?
second: I can't unlock my bootloader forever ??
and third: What is the function of recovery mode if I can't flash any cRom? Just backups?
Thanks all ^^
Click to expand...
Click to collapse
You can download a Generic FTF and use flashtool to flash it to your device
Once you unlock your bootloader it stays unlock till you relock
You can flash roms n manage general other stuff from recovery
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
You can download a Generic FTF and use flashtool to flash it to your device
Once you unlock your bootloader it stays unlock till you relock
You can flash roms n manage general other stuff from recovery
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I know what do with a unlocked bootloader, but my phone does not support any bootloader unlocking system... Any chance to do it?
xavisaldana said:
I know what do with a unlocked bootloader, but my phone does not support any bootloader unlocking system... Any chance to do it?
Click to expand...
Click to collapse
If you phone cant be unlocked then it cant be unlocked
No way around a non unlockable bootloader
Sent from my D6503 using XDA Premium 4 mobile app
Envious_Data said:
If you phone cant be unlocked then it cant be unlocked
No way around a non unlockable bootloader
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
All right then, I have a gimped terminal. Great!
Can I install Xposed tweaks btw?
xavisaldana said:
All right then, I have a gimped terminal. Great!
Can I install Xposed tweaks btw?
Click to expand...
Click to collapse
Yes, you can install anything but non stock based roms and custom kernels
Sent from my D6503 using XDA Premium 4 mobile app
Thanks Bro
Got xposed, rooted and recovery installed.

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