[Q] simple but very important question about locked and unlocked bootloader - Xperia Z Q&A, Help & Troubleshooting

I've recently bought a used xperia z but I'm not sure if the bootloader is locked or unlocked.
So my questions are:
1)How do I check this?
2)If the bootloader is locked does this guarantee me that the (stock) rom has not been "modified" previously?
My concerns at security related.

pillowfight222 said:
I've recently bought a used xperia z but I'm not sure if the bootloader is locked or unlocked.
So my questions are:
1)How do I check this?
2)If the bootloader is locked does this guarantee me that the (stock) rom has not been "modified" previously?
My concerns at security related.
Click to expand...
Click to collapse
type *#*#7378423#*#* in the phone dialer
then service info>configuration>rooting status
we will have locked bootloader when we bought it
and no bootloader can be unlocked & relocked so don't know,or you can check if the BRAVIA Engine works on Sony Album app or not

Ben Ling said:
type *#*#7378423#*#* in the phone dialer
then service info>configuration>rooting status
we will have locked bootloader when we bought it
and no bootloader can be unlocked & relocked so don't know,or you can check if the BRAVIA Engine works on Sony Album app or not
Click to expand...
Click to collapse
According to this link you can but not entirely sure since I've never done it before..
If this if not the case, could you explain to me a little bit more?

It's possible to unlock and relock the bootloader without leaving any trace that it was done. You can check if it's currently unlocked by looking in the service menu. Enter *#*#7378423#*#* in the dialler, then look in Service info - Configuration.
If you're worried just repair the phone with SUS or the PC Companion. This will completely wipe the phone and reinstall the software from scratch, therefore ensuring that nothing is tampered with.
Sent from my C6603 using Tapatalk

Related

[Q] Factory locked bootloader

Just received the XSP as an upgrade on T-Mobile UK and was disappointed to discover via the service menu that the bootloader is unlockable. Forgive me for asking but does this mean that there is absolutely no chance that at any point in the future I will be able to unlock it? I would like to use custom roms and want to know if I kight as well look for a new phone. This was never a problem on my old Optimus Black.
Thanks in advance.
Wallly said:
Just received the XSP as an upgrade on T-Mobile UK and was disappointed to discover via the service menu that the bootloader is unlockable. Forgive me for asking but does this mean that there is absolutely no chance that at any point in the future I will be able to unlock it? I would like to use custom roms and want to know if I kight as well look for a new phone. This was never a problem on my old Optimus Black.
Thanks in advance.
Click to expand...
Click to collapse
Hey fella, I'm same phone, same network and same country.
As I understand it Doomlords software will in V16 provide root for our phone. :victory:
venters said:
Hey fella, I'm same phone, same network and same country.
As I understand it Doomlords software will in V16 provide root for our phone. :victory:
Click to expand...
Click to collapse
Praise the (Doom)Lord! Will this allow us to unlock the boot then andflash custom roms?
Just to make it clear bootloader is locked this means no custom kernel which might mean custom ROMs are out ie. Cm,akop,PAC etc
You will be able to root using doomlord exploit and in time will get cwm for locked bootloader so we be able to use modded stock ROMs.
As it stands only root is available for locked bootloader hope this helps
Sent from my C5302 using xda premium
nfmplo and
zolaisugly said:
Just to make it clear bootloader is locked this means no custom kernel which might mean custom ROMs are out ie. Cm,akop,PAC etc
You will be able to root using doomlord exploit and in time will get cwm for locked bootloader so we be able to use modded stock ROMs.
As it stands only root is available for locked bootloader hope this helps
Sent from my C5302 using xda premium
Click to expand...
Click to collapse
Great, thanks. This is exactly what I needed to know. Guess I'll have to be patient then..
There is a way to unlock your bootloader. You must get a SIM unlock code, unlock your SP and send an email to Sony with some data like Imei, unlock code, etc. Then a messenger will be sent to pick your phone and lucky, Sony will unlock your phone.
lanluckez said:
There is a way to unlock your bootloader. You must get a SIM unlock code, unlock your SP and send an email to Sony with some data like Imei, unlock code, etc. Then a messenger will be sent to pick your phone and lucky, Sony will unlock your phone.
Click to expand...
Click to collapse
this may be true but it only works with bootloader that is allowed, he states in op that his bootloader is unlockable.
service menu shows if you can or not open bootloader, i am on 3 and my bootloader is locked have tried with sony code but get message not available.
zolaisugly said:
this may be true but it only works with bootloader that is allowed, he states in op that his bootloader is unlockable.
service menu shows if you can or not open bootloader, i am on 3 and my bootloader is locked have tried with sony code but get message not available.
Click to expand...
Click to collapse
Few days ago sent an email to Sony asking about this issue. Here in Spain there was a global complaint from Xperia U users asking for open the possibility of unlock their bootloaders: not to unlock it but to change the "unlockable" state of the phone. After the debate, Sony says people could send their phones to Sony attaching the respective unlock code with which they'd unlocked (SIM Unlock). Then Sony would send the telephones with the bootloader unlockable.
PS: Maybe he meant "not unlockable" instead "unlockable". If it's unlockable then he doesn't have any problem!
lanluckez said:
Few days ago sent an email to Sony asking about this issue. Here in Spain there was a global complaint from Xperia U users asking for open the possibility of unlock their bootloaders: not to unlock it but to change the "unlockable" state of the phone. After the debate, Sony says people could send their phones to Sony attaching the respective unlock code with which they'd unlocked (SIM Unlock). Then Sony would send the telephones with the bootloader unlockable.
PS: Maybe he meant "not unlockable" instead "unlockable". If it's unlockable then he doesn't have any problem!
Click to expand...
Click to collapse
Yes, I meant *not* unlockable. I actually live in Spain so this service from Sony would be very useful, could you tell me how I can do this?
Wallly said:
Yes, I meant *not* unlockable. I actually live in Spain so this service from Sony would be very useful, could you tell me how I can do this?
Click to expand...
Click to collapse
Yeah, mate. You have to send a message to Sony saying you've (sim) unlocked your phone and you want to unlock your bootloader. They will send you all the information you need to go through with the process.

[Q] Bravia Engine - Is it worth it?

Hi, my bootloader is suddenly unlockable since the .244 firmware update from Sony. So my question is this: is it worth losing the Bravia Engine by unlocking my bootloader? Is the Bravia Engine really a feature worth having on the XZ and are there any substitutes?
quantumtraveler said:
Hi, my bootloader is suddenly unlockable since the .244 firmware update from Sony.
Click to expand...
Click to collapse
If your Phone came from a carrier then it isn't unlockable regardless of the change in status.
XperienceD said:
If your Phone came from a carrier then it isn't unlockable regardless of the change in status.
Click to expand...
Click to collapse
Sad news :crying: thanks. XperienceD what's your take on Bravia anyway? Is it worth keeping a locked bootloader for Bravia Engine?
I unlocked my bootloader as soon as I got my phone. I would rather have an unlocked bootloader so I have the ability to flash custom roms and kernels then seen the colours a little brighter when watching videos and viewing pictures.
5worthington said:
I unlocked my bootloader as soon as I got my phone. I would rather have an unlocked bootloader so I have the ability to flash custom roms and kernels then seen the colours a little brighter when watching videos and viewing pictures.
Click to expand...
Click to collapse
Yeah well the biggest downside to locked bootloader is no chance of AOSP roms :crying: luckily most of the Xperia's UI is pretty cool, particularly the Honami email, messaging and contacts. So after XperienceD's news about bootloader being locked if the handset came from a carrier, I can live with it for now... gonna try unlock it anyway
quantumtraveler said:
gonna try unlock it anyway
Click to expand...
Click to collapse
Good luck
quantumtraveler said:
Sad news :crying: thanks. XperienceD what's your take on Bravia anyway? Is it worth keeping a locked bootloader for Bravia Engine?
Click to expand...
Click to collapse
I'd prefer to keep it but would happily sacrifice it for the ability to be able to unlock my BL. You can try for nothing but if it does come from a carrier then I've yet to see anyone who has reported this change in status then go on to unlock it. I'll never have another Phone from a carrier that's for sure.
Is it worth?
Simply. Yes. That's my opinion.
Btw, I unlocked bootloader and I still have BE2, all these DRM keys. Is it normal?
Seems http://unlockbootloader.sonymobile.com/ is intermittently down tonight loaded the web page earlier but can't load it now. Will check it out tomorrow, my phone is from Vodacom so it's a carrier phone.. this will be an interesting test. Is it normal for Sonymobile website to be down? "The website encountered an unexpected error. Please try again later." Poor show if it is..
Can anyone confirm if you're getting an error on this link: http://unlockbootloader.sonymobile.com/
Sony Xperia
Error
The website encountered an unexpected error. Please try again later.
Click to expand...
Click to collapse
quantumtraveler said:
Can anyone confirm if you're getting an error on this link: http://unlockbootloader.sonymobile.com/
Click to expand...
Click to collapse
Seems like it's down at the moment.
http://www.downforeveryoneorjustme.com/http://unlockbootloader.sonymobile.com/
Sent from my C6603 using Tapatalk 4
It worked, unlocked my bootloader with a carrier issued handset I bought my phone from a dude when it was three months old. It came from Vodacom. It had the Vodafone logo splash screen when booting from stock and he showed me a photo of the registration screen at Vodacom when he picked it up. So I assume it was a carrier issued handset. Anyway, seems all is well now :highfive:
Bootloop on Sony logo after unlocking bootloader. What am I missing? Do I need to flash new .244 firmware and then flash custom rom?
quantumtraveler said:
Bootloop on Sony logo after unlocking bootloader. What am I missing? Do I need to flash new .244 firmware and then flash custom rom?
Click to expand...
Click to collapse
I flashed .244 stock firmware in Flashtools and now it's fine. But I can't flash custom kernel, so I suppose that means my bootloader is still locked? But when I unlocked it, it said successful
quantumtraveler said:
I flashed .244 stock firmware in Flashtools and now it's fine. But I can't flash custom kernel, so I suppose that means my bootloader is still locked? But when I unlocked it, it said successful
Click to expand...
Click to collapse
My guess is that something went wrong with BL unlocking.
quantumtraveler said:
But I can't flash custom kernel, so I suppose that means my bootloader is still locked? But when I unlocked it, it said successful
Click to expand...
Click to collapse
Type *#*#7378423#*#* (service) in dialer.
Then open Service info > Configuration
Check "Rooting status"
if it says "Bootloader unlocked: Yes" guess what
if it says "Bootloader unlock allowed: Yes" or something like this, your bl isn't unlocked
-woczarder- said:
Type *#*#7378423#*#* (service) in dialer.
Then open Service info > Configuration
Check "Rooting status"
if it says "Bootloader unlocked: Yes" guess what
if it says "Bootloader unlock allowed: Yes" or something like this, your bl isn't unlocked
Click to expand...
Click to collapse
Thanks, this makes sense! Mine says "Bootloader unlock allowed: Yes" so back to the drawing board..
When I unlock my bootloader, I know I'll lose my sdcard content but will I still be able to boot into the rom (I'm using monx for LB/UB) or do I need to re-flash?
Success!!
Success!! :highfive: thanks for the advice here, bootloader is now unlocked yes man :victory::victory:
XperienceD said:
I'd prefer to keep it but would happily sacrifice it for the ability to be able to unlock my BL. You can try for nothing but if it does come from a carrier then I've yet to see anyone who has reported this change in status then go on to unlock it. I'll never have another Phone from a carrier that's for sure.
Click to expand...
Click to collapse
Hey XperienceD, dunno how this happened. My bootloader changed from a status of unlock not allowed to unlock allowed after I flashed .244. Now I managed to unlock the bootloader, and it's a carrier phone from Vodacom in South Africa. Strange but true :victory:

A little help about TA backup..

Guys need your help about this matter, I just bought my xperia z1 a week ago and i already rooted it... So my question is can i still back up my TA? I did not tamper my bootloader..how will i know if my bootloader is unlocked?
My process in rooting my xperia z1 is:
1st I downgrade my xperia z1 in 14.1.G.1.534 firmware and rooted it using vroot then upgrade it to the latest firmware which is 14.1.G.2.257... BTW I uninstall the vroot superuser because it's in chinese language and I can't understand it, but I replaced it Superuser in playstore and it works fine!...Thanks~
from Philippines
unless u visited the bootloader unlock website and requested for a key which involved keying in your imei number and then using fastboot to unlock bootloader, it's fine...
u can verify by checking if bravie engine works... or dial *#*#7378423#*#* and going to service info > config > rooting status
chewdaniel said:
unless u visited the bootloader unlock website and requested for a key which involved keying in your imei number and then using fastboot to unlock bootloader, it's fine...
u can verify by checking if bravie engine works... or dial *#*#7378423#*#* and going to service info > config > rooting status
Click to expand...
Click to collapse
It says bootloader unlocked allowed: yes.. Does it mean my xperia z1 bootloader is already unlocked? But i did not attempt to unlock my bootloader...
sent from future!
gaboh24 said:
It says bootloader unlocked allowed: yes.. Does it mean my xperia z1 bootloader is already unlocked? But i did not attempt to unlock my bootloader...
sent from future!
Click to expand...
Click to collapse
No, it means you are allowed to unlock it, but you have not done it yet otherwise it would say
bootloader unlocked: yes
gregbradley said:
No, it means you are allowed to unlock it, but you have not done it yet otherwise it would say
bootloader unlocked: yes
Click to expand...
Click to collapse
Hooooo! Great answer.. I thought i acidentally unlocked my bootloader, so it means i can backup my TA.. I can sleep now peacefully!
sent from future!
gaboh24 said:
Hooooo! Great answer.. I thought i acidentally unlocked my bootloader, so it means i can backup my TA.. I can sleep now peacefully!
sent from future!
Click to expand...
Click to collapse
trust me, you cannot accidentally unlock it...
Hahaha chewdaniel says to look at sevices menu if it's unlocked and i saw the word "yes" i thought i accidentally unlock it when performing to root it..i feel nervous when i saw it haha!
sent from future!
1. visit bootloader unlock website
2. key in your imei number
3. receive an email with unlock code
4. FINDING & INSTALLING FASTBOOT DRIVERS, while phone is in Fastboot state
5. entering bootloader unlock command with a very long and complicated unlock code
so yea... like Greg said... there's no way u can "accidentally unlock" it

[Q] Bootlader

i had checked that code for checking boot loader it says yes
it means my boot loader is unlocked or not
if its unlcoked then what should i do because i had purchase this mobile before 2 days
so please revert
Azhar
azhar.munshi said:
i had checked that code for checking boot loader it says yes
it means my boot loader is unlocked or not
if its unlcoked then what should i do because i had purchase this mobile before 2 days
so please revert
Azhar
Click to expand...
Click to collapse
It means that you can unlock your bootloader... It doesn't come unlocked you have to unlock it..
Refer this for more information http://forum.xda-developers.com/showthread.php?t=2354721
For Root refer this http://forum.xda-developers.com/showthread.php?t=2440375
HIT THANKS IF YOU LIKE MY WORK!..
i want to ask you something my last mobile is Samsung galaxy r
when we install kernel there is warning or yellow triangle sign is coming rest things work fine
download count also increases
i want to know that if i root Sony sp then like some things happen
i have to submit my full imei number to Sony
if i lock boot loader again then i can regain my warranty if my imei number is with sony
Azhar
There is no flash counter to worry about with Sony phones...... Once you have unlocked bootloader your warranty is void even if you relock it.
Rooting does not void warranty.
Sent from my C5303 using Tapatalk
zolaisugly said:
Once you have unlocked bootloader your warranty is void even if you relock it.
Click to expand...
Click to collapse
Why?? I will relock bootloader, restore DRM keys, flash stock rom and will have same system when was when I bought the phone.
That I have "order" unlocking bootloader key doesen't mean that I did it.
smogf said:
Why?? I will relock bootloader, restore DRM keys, flash stock rom and will have same system when was when I bought the phone.
That I have "order" unlocking bootloader key doesen't mean that I did it.
Click to expand...
Click to collapse
Read this in particular the very bottom paragraph....
http://unlockbootloader.sonymobile.com/instructions
Sent from my Nexus 7 using Tapatalk
Yes. But when you relock it, restore TA partition and flash stock there will be no sign that you have done it.
You may be correct... but most people will say that unlocking bootloader well void the warranty.
Sent from my C5303 using Tapatalk
smogf said:
Yes. But when you relock it, restore TA partition and flash stock there will be no sign that you have done it.
Click to expand...
Click to collapse
Yes, but you have given the imei of your device to Sony in order to get the unlock code. So if something happens to you phone and you get it at a Sony repairing center, the first thing they do is to read the imei from your device and check if it is in there database
Sent from my Xperia SP using Tapatalk
zolaisugly said:
You may be correct... but most people will say that unlocking bootloader well void the warranty.
Sent from my C5303 using Tapatalk
Click to expand...
Click to collapse
Yes. But when youcrelock it your warrany magically came back
AnDas said:
Yes, but you have given the imei of your device to Sony in order to get the unlock code. So if something happens to you phone and you get it at a Sony repairing center, the first thing they do is to read the imei from your device and check if it is in there database
Click to expand...
Click to collapse
And so?? They also have my phone in database when I bought it. I dont understand your reasoning.
I have buy a bulb yesterday. Just in case. Thats mean that I have to immediately change it??
No.
And for confirmation.
I ave do it twice.
First with my old LG GT540. (Stock -> root -> cyanogenmod (warranty off) -> flash stock without recovery, and fastboot (warranty on)
Second. Xperia SP (Stock -> root -> bootloader unlock (warranty off) -> existenz -> relocking BL -> Restoring TA -> Stock ROM (warranty on)
Both of them was rapairing without aditional costs.
End.
--------
Send with Tapatalk from Xperia SP

xperia z1 c6903 cant unlock bootloader

good afternoon, I have a problem with my xperia z1 c6903 when unlocking the bootloader I get a message that says your phone can not be officially unlocked that I should thank.
Apparently Sony has blocked the ability to unlock the bootloader on certain devices.
This is most likely the case if you got your phone from your carrier. Do you have a branded Z1?
You can also look up if this is the case by doing the following:
1. Open dialler and enter *#*#7378423#*#*
2. Go to Service info > Configuration > Rooting Status.
3. "Bootloader unlock allowed" should say Yes
If it doesn't, then at least the official way of unlocking your device won't work.
Any "not official" way to unlock the bootloader? Mine is locked too and i want to install something new in that old one. Thanks in advance.
Mine says not posible but i read somewere that can be done
That's the thing, is an old smartphone today, i don't understand why only certains models can be unlocked. Now im on last oficial os (5.1.1). I get it root but i cant unlock the bootloader in any way.
wowegoo said:
That's the thing, is an old smartphone today, i don't understand why only certains models can be unlocked. Now im on last oficial os (5.1.1). I get it root but i cant unlock the bootloader in any way.
Click to expand...
Click to collapse
Fyrenic said:
Apparently Sony has blocked the ability to unlock the bootloader on certain devices.
This is most likely the case if you got your phone from your carrier. Do you have a branded Z1?
You can also look up if this is the case by doing the following:
1. Open dialler and enter *#*#7378423#*#*
2. Go to Service info > Configuration > Rooting Status.
3. "Bootloader unlock allowed" should say Yes
If it doesn't, then at least the official way of unlocking your device won't work.
Click to expand...
Click to collapse
hi is there any unofficial way to unlock it, i want to have freedom on choosing what rom to install, i'm having difficulties on finding a rom that works on the stock kernel. can you help?

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