[Q] Downgrading without unlocking bootloader? - Sony Xperia Z Ultra

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

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

[Q] Flash with locked bootloader?

I am very new to this forum.
Can i use the flashtool to flash this firmware WITHOUT unlocking bootloader/voiding my warranty?
Odp: [Q] Flash with locked bootloader?
Yes. You can install all of the Sony fw. But it must be original firmware. You won't loose your warranty and you don't have to unlock your BL.
Sent from my LT22i using xda app-developers app

Bootloader Unlock!

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.
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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!

[Q] How to get root on Lollipop without unlocking BL?

Hi
I'm a new user of Z2 D6503. I have the newest Android Lollipop, 23.1.A.0.726.
I'd like to get root without unlocking Bootloader and I don't want to downgrade software via Flashtool because I've had some problems with flashtool with my Z3 Tablet Compact.
Is there any way to root Z2 without unlocking bootloader and without downgrade? Any tools/rootkits etc?
[deleted]
Just ignore the warnings.. Great advice there. Here is a link. http://forum.xda-developers.com/showthread.php?p=60709899
Sent from my D6503 using XDA Free mobile app
Ok thanks. Now which roms can I flash?

how can i flash a factory image on a xperia xa ultra F3213

Hello everyone
I have been waiting for some time to update my XPERIA XA ULTRA to Nougat 7.0 and have been observing that many people are up to date with the update and would like to know if I can download and install the update manually.
If so, they could help me with the steps and the tools to do it.
Thank you very much.
Hi
Are you waiting for USA customized 7.0 update?
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mchlbenner said:
Hi
Are you waiting for USA customized 7.0 update?
Sent from my F3213 using xda premium
Click to expand...
Click to collapse
No, I am waiting for my device to be updated in Guatemala I have it with a carrier here in my country, and I want to know if I can manually put it either with flashtool or from the bootloader update.
(sorry for my bad english )
To use flash tool you would need to have your bootloader unlocked.
I have that most branded xa ultra can't unlock bootloader.
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mchlbenner said:
To use flash tool you would need to have your bootloader unlocked.
I have that most branded xa ultra can't unlock bootloader.
Click to expand...
Click to collapse
Mine is branded, and can't unlock, useless and ignorant policies preventing us from getting the updates ourselves as the manufacturer doesn't seem to care.
I'm rooted would to flash 7.0 but no us ftf files.
All could fine is a 7,0 Latin America generic ftf and will not take trying to flash it.
Sent from my F3213 using xda premium
You can flash stock ROM with flashtool without unlocking bootloader.
You can regain root after flashed to 7.0 (.182) by flashing boot followed by TWRP.
mingkee said:
You can flash stock ROM with flashtool without unlocking bootloader.
You can regain root after flashed to 7.0 (.182) by flashing boot followed by TWRP.
Click to expand...
Click to collapse
If your bootloader is locked twrp will not boot.
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