[Q] Bootloader Question! - Sony Xperia T, TL, TX, V

Hello fellow XDA'ers. I have a simple question. I'm not entirely sure what happened to my phone (Xperia TX) but for some odd reason now it says that my bootloader is locked. When I know it was unlocked previously as I've used custom ROMS before. The question I have is does that mean that my bootloader cannot be unlocked again? Whenever I put in the service code it says that Root Status: Bootloader Unlock Allowed: No
I'm not sure what caused this to happen and whether or not it can be fixed.
If anyone knows and can help I would greatly appreciate it!
Thank you in advance

If you had 'Bootloader unlock allowed: Yes' out of the box, then there's nothing to worry about, it is unlockable and always will be.
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Related

[Q] Two questions regarding bootloader and rooting

This has been discussed many times before, but I have seen conflicting answers to these questions. I hope that by asking them again I can get a consensus from everyone.
Questions
1) Do you need to unlock your bootloader to be able to root your SP phone? Most people say yes, others think no.
2) If you need to unlock your bootloader, is it possible to do it when you have "bootloader unlock allowed: no" setting? Most people say no. For what it's worth, my phone is not SIM locked.
Thanks.
Yet.Another.ID said:
This has been discussed many times before, but I have seen conflicting answers to these questions. I hope that by asking them again I can get a consensus from everyone.
Questions
1) Do you need to unlock your bootloader to be able to root your SP phone? Most people say yes, others think no.
2) If you need to unlock your bootloader, is it possible to do it when you have "bootloader unlock allowed: no" setting? Most people say no. For what it's worth, my phone is not SIM locked.
Thanks.
Click to expand...
Click to collapse
1) You don't need to unlock bootloader to root your SP.
2) You cannot unlock the bootloader, if you have "Bootloader Unlock Allowed: No"
Thanks, msainani.
On the one hand, it is good news that I can root without unlocking the bootloader.
But does this mean I cannot change ROMs or update the OS? What would be I be able to do with a phone that is both rooted and unlocked versus a phone that is rooted but locked?

Bootloader Unlock Status

Hi,
I just bought my Z1 today and is ready to root it. This is my first Sony device so Im still getting used to it.
Ive read some guide on unlocking the bootloader. However Im a bit confused as to the the status "Bootloader Unlock Allowed?: Yes"
Does this mean;
1. The device can be unlocked.
2. Or the device is already unlocked.
Please clarify, thank you.
darthkir said:
Hi,
I just bought my Z1 today and is ready to root it. This is my first Sony device so Im still getting used to it.
Ive read some guide on unlocking the bootloader. However Im a bit confused as to the the status "Bootloader Unlock Allowed?: Yes"
Does this mean;
1. The device can be unlocked.
2. Or the device is already unlocked.
Please clarify, thank you.
Click to expand...
Click to collapse
Bootloader Unlock Allowed: Yes <==> You are allowed to unlock your bootloader. Or: your bootloader is unlockable, but it isn't unlocked right now.
Steve_max said:
Bootloader Unlock Allowed: Yes <==> You are allowed to unlock your bootloader. Or: your bootloader is unlockable, but it isn't unlocked right now.
Click to expand...
Click to collapse
Thanks for the clarification.
That means that YOU CAN unlock your bootloader. After you unlock it it will say bootloader status: rooted.

[Q] Help: Sony Xperia Z1 says cannot unlock bootloader

How can I install a custom ROM without an unlocked bootloader?
My phone says its bootloader cannot be unlocked
Mine too , it's must to be a solution to unlock the bootloader...
No, there is no solution
If it says it cannot be unlocked then it cannot be unlocked
Look in the development section for stock based custom roms that can be installed with a locked bootloader
To my experience it needs to be sim unlocked first in order to be bootloader unlocked. In a Xperia Z it said it couldn't unlock bootloader, i purchased unlock code, got it unlocked and then reflashed stock image. After that the status on "bootloader unlock allowed" was changed to yes.
roobns said:
To my experience it needs to be sim unlocked first in order to be bootloader unlocked. In a Xperia Z it said it couldn't unlock bootloader, i purchased unlock code, got it unlocked and then reflashed stock image. After that the status on "bootloader unlock allowed" was changed to yes.
Click to expand...
Click to collapse
Please provide proof of that, because this has never happened before and would be fantastic news
Also, some sim locked phones can have bootloaders unlocked and some sim free phones have bootloaders that cannot be unlocked. SO your logic is wrong.
gregbradley said:
Please provide proof of that, because this has never happened before and would be fantastic news
Also, some sim locked phones can have bootloaders unlocked and some sim free phones have bootloaders that cannot be unlocked. SO your logic is wrong.
Click to expand...
Click to collapse
Can't provide proof as 1) the bootloader was already unlocked 2) I don't even have the phone anymore.
I don't know if you find my logic right or wrong it was what happened to MY experience with one phone.
I'm pretty sure devs can give you a technical explanation about why it can or can't happen.
roobns said:
Can't provide proof as 1) the bootloader was already unlocked 2) I don't even have the phone anymore.
I don't know if you find my logic right or wrong it was what happened to MY experience with one phone.
I'm pretty sure devs can give you a technical explanation about why it can or can't happen.
Click to expand...
Click to collapse
OK thanks.
I know what the devs will say. They will say it cant happen. This has been talked about ad infinitum across various xperia devices.
Also, if your boot was already unlocked then how did you know the status changed?
Thanks anyway.
gregbradley said:
OK thanks.
I know what the devs will say. They will say it cant happen. This has been talked about ad infinitum across various xperia devices.
Also, if your boot was already unlocked then how did you know the status changed?
Thanks anyway.
Click to expand...
Click to collapse
When i got the phone (telcel mexico) it said the bootloader was not allowed to be unlocked.
I purchased an unlock code. Entered the code, unlocked the phone.
I flashed an upgraded FW via FTF
typed *#*#SERVICE#*#* and boom bootloader unlock statys changed to yes
That's how i know the status changed. So basically that's my story. I thought it could work with every device.
@gregbradley maybe the sim unlock method really works to change unlock bootloader status YES..bcs it works for some sony device, and we need to test this on Z1.
http://forum.xda-developers.com/showthread.php?t=1896553
There is nothing in that thread that confirms this. Plus the test point method to unofficially unlock the bootloader was stopped by Sony nearly 2 years ago.
But please, delve into this again if you want. But trust me it is a dead end and does not work. If it was easy as sim unlocking and flashing a ftf do you not think that would have been done by now.
Some seriously good devs have been working on this ever since the test point method was closed.
Sent from my C6903 using XDA Premium 4 mobile app

Unlocking the bootloader VS phone warranty

XPERIA Z3 Compact D5083
Original Factory ROM
Unrooted
Hello all,
I've been wanting to root my phone since I got it last month. The only trouble is that I'd also like to keep my warranty.
After looking through the phone for a while, I found this in the service menu
"Rooting Status:
Bootloader unlock allowed: yes"
I was wondering if this means I can unlock the bootloader and root the phone while allowing the phone to remain under warranty?
Also, would flashing a recovery mode void the warranty?
Any and all help will be appreciated.
BrandonPJM said:
XPERIA Z3 Compact D5083
Original Factory ROM
Unrooted
Hello all,
I've been wanting to root my phone since I got it last month. The only trouble is that I'd also like to keep my warranty.
After looking through the phone for a while, I found this in the service menu
"Rooting Status:
Bootloader unlock allowed: yes"
I was wondering if this means I can unlock the bootloader and root the phone while allowing the phone to remain under warranty?
Also, would flashing a recovery mode void the warranty?
Any and all help will be appreciated.
Click to expand...
Click to collapse
Your warranty will be void if you install custom recovery,that thing in the service menu means that it will allow to unlock the bootloader,some phones have this set to no so they cannot unlock the bootloader in anyway possible,but anyways your warranty will be void if you try unlocking the bootloader.

Bootloader unlock allowed: no

Hey,
I wanted to root my XZ1 compact, unfortunaly I realized that my bootloader is unable to be unlocked.
I am a bit confused, as I thought the unlocking is not allowed if your phone is blocked by your carrier, but this phone doesn't have a branding and has no simlock.
Are there other reasons why a bootloader unlocking isn't allowed?
I got this phone as a display model from I think it was UK, perhaps this could be why.
If someone has an idea if there could be a way to unlock, I would be very grateful, even though I know that it doesn't seem possible.
Edit: Ok I think the bootloader is still blocked by the carrier MyEE, their app is on the phone. So it's probably because of them that the phone is blocked, even though I can use other SIM cards...
If somebody knows what I could do to unblock the bootloader, please tell me.
Thank you!
Monti1811 said:
Edit: Ok I think the bootloader is still blocked by the carrier MyEE, their app is on the phone. So it's probably because of them that the phone is blocked, even though I can use other SIM cards...
Click to expand...
Click to collapse
If the phone came from EE or any other carrier the BL will be locked, getting a code to unlock the sim won't unlock the BL, so unfortunately you're stuck with a BL locked phone.

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