- Boatloader Cannot Be Unlocked? - Sony Xperia XZ Questions & Answers

If you have a branded phone then it seems the boatloader cannot be unlocked to install custom roms. Is it possible to change this by flashing generic stock firmware to remove the carrier branding first?

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[Q] How to Debrand M4

Hi All
I have a totally stock M4 4.2.2 phone from Voda UK
(it has the boot logo from Voda along with pre-loaded network apps)
I just want to make it a stock European version...(UK ideally) with no network logos or apps
End wish is a stock 4.4.4 with root (ideally towelroot or similar) so if I want to...I can unroot and leave untouched/stock
As stated...no htcdev done or anything with unlocking bootloader
Advice please?
!SINGH! said:
Hi All
I have a totally stock M4 4.2.2 phone from Voda UK
(it has the boot logo from Voda along with pre-loaded network apps)
I just want to make it a stock European version...(UK ideally) with no network logos or apps
End wish is a stock 4.4.4 with root (ideally towelroot or similar) so if I want to...I can unroot and leave untouched/stock
As stated...no htcdev done or anything with unlocking bootloader
Advice please?
Click to expand...
Click to collapse
I'm afraid that once you go root ( unless you only use temproot ) you can't go back to absolute stock.
To "transform" it to a European version you'll have to do Super CID, which requires unlocked bootloader & s-off.
htc_one_mini_m4 said:
I'm afraid that once you go root ( unless you only use temproot ) you can't go back to absolute stock.
To "transform" it to a European version you'll have to do Super CID, which requires unlocked bootloader & s-off.
Click to expand...
Click to collapse
Well.. What about..
S-Off....
SuperCiD
flash with stock European rom
Set CID back to the European one...(so it doesn't brick)
Re-lock the bootloader
S-On
That way... I have a stock European Rom 4.4.4 on a stock One Mini
?
!SINGH! said:
Well.. What about..
S-Off....
SuperCiD
flash with stock European rom
Set CID back to the European one...(so it doesn't brick)
Re-lock the bootloader
S-On
That way... I have a stock European Rom 4.4.4 on a stock One Mini
?
Click to expand...
Click to collapse
Not entirely.
If I'm not mistaken ( I'm not a phone freak, just a computer hardware engineer & mediocre software programmer ) you can't re-lock the bootloader like stock.
It displays "Re-Locked" once locked again with fastboot or another tool.
You'll have a stock image, but you won't have the applications that are preloaded in the data partition which gets erased during the Bootloader unlocking process, and that blocks you from flashing any newer OTA updates via the classic method ( like a totally stock phone )

New Xperia user here:D Some help?

So...apparently I can't unlock my bootloader. I've seen that you can root even if you have your bootloader locked, but what about flashing a rom?
Is there any chance to flash a custom rom with your bootloader locked? Not stock pre-rooted rom..
CanĀ“t say if you can unlock bootloader based on what model you have.
Yes you can flash any custom ROM based on Stock ROM on locked bootloader, but you can not flash AOSP roms on Locked BL. For those you need to unlock it.

Do I Need To Unlock Bootloader To Flash Stock ROM?

I'm trying to flash a stock rom on my phone, but it doesn't work. I unlocked OEM unlocking and don't understand why it's not working.

Is it ok to flash an unbranded stock ROM to carrier ROM?

as above.
I just want to avoid the carrier boot animation and whatever apps they have installed on the phone. Thanks!
You need to unlock bootloader via htc dev, root, s-off, change cid and mid then flash the unbranded firmware.

Unlock bootloader v4?

Is there anyway to get an unlocked bootloader? I am still running stock nougat with bootloader v4. Can I flash G930U and unlock bootloader that way? I really just want to install custom ROMS. I have no need for regular root.
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