OEM Unlock Grey Z5Premium | Bootloader Unlock Allowed: Yes - Xperia Z5 Premium Q&A, Help & Troubleshooting

Hello everyone
As the title says the problem is pretty simple. I need to unlock bootloader in a device with Bootloader Unlock Allowed: Yes, but one step to do that is to turn on OEM Unlock from dev setting in the device. Which i can not do since it is greyed out. I just go this device and it has not been unlocked or relocked.

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[Q] How to check if the bootloader is locked or unlocked?

Hello Frnds,
I need to submit my handset for housing crack issue to the SE service center.. But recently I had flashed it with the Stock ROM prepared with the help of SEUS and Flashtool. So can anyone tell me how to check my Bootloader has been unlocked or it is still locked? Because the method to flash the Stock ROM I used says that it wont unlock the bootloader.. So can somebody please tell me how can I check it? If it is unlocked then the SEUS or PC Companion will not detect it, right? Thanks..
mandarjoshiin said:
Hello Frnds,
I need to submit my handset for housing crack issue to the SE service center.. But recently I had flashed it with the Stock ROM prepared with the help of SEUS and Flashtool. So can anyone tell me how to check my Bootloader has been unlocked or it is still locked? Because the method to flash the Stock ROM I used says that it wont unlock the bootloader.. So can somebody please tell me how can I check it? If it is unlocked then the SEUS or PC Companion will not detect it, right? Thanks..
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If you did not unlock downloader then it will be locked, if you have you can relock it just search, and DooMLorD has a thread getting back to stock, hope this helps.
Sent from my LT15i using XDA Premium App
If you unlock your bootlaoder, you will loose the DRM aplications like TrackID. So start the TrackID app and if it works, your bootloader is still locked, if it doesn't and you get some error, then it's unlocked.
Dial *#*#7378423#*#* . Then go to -> "Service Info" -> "Configuration". If there is:
Bootloader unlock allowed - Yes << this means that your Bootloader is Locked
Bootloader Unlocked - Yes << this means that your bootloader is unlocked
Thanks all.. I checked.. It is not unlocked..
and if it says "Bootloader unlock allowed: No", I guess I have to the "pay" route to get it unlocked?
robotfoodisgood said:
and if it says "Bootloader unlock allowed: No", I guess I have to the "pay" route to get it unlocked?
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That means you have Simlock. You have to pay for simlock code for unlock and then unlock the bootloader
ZyxeLa said:
That means you have Simlock. You have to pay for simlock code for unlock and then unlock the bootloader
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Thanks for the quick response. It is already SIM unlocked, so I guess the next step is paying for bootloader unlock?
robotfoodisgood said:
Thanks for the quick response. It is already SIM unlocked, so I guess the next step is paying for bootloader unlock?
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No, no, bootloader unlock is official by Sony Ericsson and it's free. Go to this site and unlock your bootloader There is also Instruction
ZyxeLa said:
That means you have Simlock. You have to pay for simlock code for unlock and then unlock the bootloader
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Wrong. SIM/network lock and bootloader are completely separate.
It will always say "Bootloader unlock allowed: Yes" even if your bootloader is unlocked. Yes or No just refers to if it can be unlocked.
I did it on my x10i and the text bootloader isnt there anywhere. so what now?
BluechipJ said:
Wrong. SIM/network lock and bootloader are completely separate.
It will always say "Bootloader unlock allowed: Yes" even if your bootloader is unlocked. Yes or No just refers to if it can be unlocked.
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If it says bootloader unlock no can it still be unlocked using test point method ?
chiefy009 said:
If it says bootloader unlock no can it still be unlocked using test point method ?
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well, can it?
th3discodancer said:
well, can it?
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Yes but you need setool2 I believe, jinx13 can do it he did my arc s when it said no
Sent from my LT18i using xda premium
ZyxeLa said:
Dial *#*#7378423#*#* . Then go to -> "Service Info" -> "Configuration". If there is:
Bootloader unlock allowed - Yes << this means that your Bootloader is Locked
Bootloader Unlocked - Yes << this means that your bootloader is unlocked
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Click to collapse
I must confirm this. I've just unlocked bootloader on SE xperia mini pro, and before unlocking it was saying "Bootloader unlock allowed - Yes " and now after unlock it says "Bootloader Unlocked - Yes"
ZyxeLa said:
Dial *#*#7378423#*#* . Then go to -> "Service Info" -> "Configuration". If there is:
Bootloader unlock allowed - Yes << this means that your Bootloader is Locked
Bootloader Unlocked - Yes << this means that your bootloader is unlocked
Click to expand...
Click to collapse
That's totally wrong. If it says no, the only way to unlock it is paid and if it says yes, then it allows you to unlock it yourself with the test point or the official SE unlock bootloader feature using your IMEI.
Otku_znam said:
I must confirm this. I've just unlocked bootloader on SE xperia mini pro, and before unlocking it was saying "Bootloader unlock allowed - Yes " and now after unlock it says "Bootloader Unlocked - Yes"
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odd...because after i have unlocked the bootloader, i still have Bootloader unlock allowed: yes. I have confirmed I have an unlocked bootlaoder as I am able to use fastboot.
my brother have a branded x10i. I already installed xrecovery and custom rom, when i try to reach the service menu with *#*#7378423#*#* nothing is happening. How do i know if i can unlock bl or its locked?
just boot intro bootloader mode
ZyxeLa said:
Dial *#*#7378423#*#* . Then go to -> "Service Info" -> "Configuration". If there is:
Bootloader unlock allowed - Yes << this means that your Bootloader is Locked
Bootloader Unlocked - Yes << this means that your bootloader is unlocked
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Click to collapse
Hi, I'm on stock SE 2.3.3 GB, rooted with xrecovery 0.3
I want to install cobrato's miui 2.3.3 (gb 2.3.7), was wondering if i need to unlock my bootloader and flash any kernel or directly go ahead with it.
I tried ur method *#*#7378423#*#* aka *#*#SERVICE#*#* and there is no lone mentioning bootloader.
Thanks

Question for Omnius :)

I have Sim lock Xperia Arc S and in service info is bootloader unlock allowed: no .. i want to unlock my bootloader to flash custom kerlners i will buy Single unlock licence for omnius and what should i chose : Unlock network lock by certificate replacement or Unlock bootloader ? i just want to install CM 10 ... I HOPE THAT SOMEONE CAN ANSWER MY QUESTION
can someone answer please )
"Unlock network lock by certificate replacement" as you are stuck with your network sim..once u r free u can unlock bootloader from sony official way..
arpith.fbi said:
"Unlock network lock by certificate replacement" as you are stuck with your network sim..once u r free u can unlock bootloader from sony official way..
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i got different answer to chose unlock bootloader and it will unlock my bootloader and sim unlock my phone
MarioJerkovic said:
i got different answer to chose unlock bootloader and it will unlock my bootloader and sim unlock my phone
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if you are getting both bootloader and sim unlocked then it is well and good. I thought you had t choose between bootloader unlocking and sim unlocking. Coz bootloader unlocking is very simple compared to sim unlocking.
arpith.fbi said:
if you are getting both bootloader and sim unlocked then it is well and good. I thought you had t choose between bootloader unlocking and sim unlocking. Coz bootloader unlocking is very simple compared to sim unlocking.
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aha ... Thanks i choose both because i only want CM10 nothing else for that i need to flash a custom kerlner so i need enabled fastboot

[Q] How can I check the bootloader status?

I followed the guides here, but there was no indication that the bootloader was successfully unlocked. I flashed RomAur 1.2 after installing the dual recovery, but before trying to unlock the bootloader. It flashed fine, but there were some problems here and there. I then followed the guide to unlock the bootloader, reflashed the rom, and everything seems to be OK, but because of this whole mess, I'm not sure I really unlocked the bootloader. How can I check the bootloader status?
open dialer app then type *#*#service#*#* or should I say *#*#7378423#*#*
Then navigate to Service info->Configuration
check rooting status.
If it says bootloader unlock allowed: Yes = locked bootloader
If it says bootloader unlocked: Yes = unlocked bootloader
Riyal said:
open dialer app then type *#*#service#*#* or should I say *#*#7378423#*#*
Then navigate to Service info->Configuration
check rooting status.
If it says bootloader unlock allowed: Yes = locked bootloader
If it says bootloader unlocked: Yes = unlocked bootloader
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That's neat. I didn't know that menu. Thanks!

If I sim unlock my phone, can I unlock the bootloader?

My phone says that the bootloader can't be unlocked but I want to unlock it and I don't know how to do it
maddboss said:
My phone says that the bootloader can't be unlocked but I want to unlock it and I don't know how to do it
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If it says "Bootloader Unlock allowed: No", then it is not possible to unlock Your bootloader. Probably Your device is a Operator locked or something similar too. Also, there was no need to create a new thread, You could have simply posted in here.
Bootloader unlock of LT28AT is impossible?
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I have a question about relocking the bootloader..

I have seen some videos and tutorials about unlocking/relocking the bootloader in Xiaomi phones, but I have a question, is there any way to find out that the device was unlocked after relocking it?
Any fastboot command to show the status of RElocking?
And does the phone show Locked or Relocked in settings > Dev options?
Thanks in advance
In Developer Options there is a Tab named "MI Unlock Status " You can see if the device BL is locked or Unlocked.
Hemanth28 said:
In Developer Options there is a Tab named "MI Unlock Status " You can see if the device BL is locked or Unlocked.
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This is not the question actually, if I unlock the bootloader then lock it back, will it show locked or RELOCKED (Like Huawei phones)?

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