[Tutorial] Relock Xperia Z bootloader

[Aerys]

Good day my friends:laugh:

I will show you how to relock the bootloader of XZ

Flashtool version used: flashtool-0.9.10.2beta

Download the latest Flashtool ( found in OG android development forum)
Install the Flashtool drivers found in the drivers folder
Connect phone in Flash-mode (phone shut down, volume down + power)
Press the BLU button
Press the relock option
Put a stock .tft firmware in the Flashtool firmwares folder (this is required!!)
Flash the firmware (this is required!!)
Done

You will now have a locked stock xperia z

Extra info by Flashtool developer:

A litte explanation :about relocking / unlocking :
When relocking the device, I save the unlock code into custom\DEVICESERIAL\unlock.txt
If ever you relocked using another method than BLU from FT (with a custom ftf for example), then you must create this file by hand to be able to unlock the device again.
This file must contain the unlock code. One line only, no carriage return.

i am not responsible for bricked devices

 

[ratcom]

can you link to the Flashtool version you are using just to save any confusion

 

[RaymondCh]

is it no any problem after using this method to relock Xperia Z???

 

[Kallb123]

http://forum.xda-developers.com/showthread.php?t=2162907

The OP describes more about relocking and then unlocking again.

Would this be enough for a warranty repair/replace? Or would, say, Amazon have access to a list of unlocked device IMEIs?

 

[DooMLoRD]

Good day my friends:laugh:

I will show you how to relock the bootloader of XZ

Download the latest Flashtool ( found in OG android development forum)
Install the Flashtool drivers found in the drivers folder
Connect phone in Flash-mode (phone shut down, volume down + power)
Press the BLU button
Press the relock option
Put a stock .tft firmware in the Flashtool firmwares folder (this is required!!)
Flash the firmware (this is required!!)
Done

You will now have a locked stock xperia z

Flashtool version used: flashtool-0.9.10.2beta

i am not responsible for bricked devices

Just flashing stock firmware will not fix the "bootloader status: unknown"

Sent from my C6602 using xda app-developers app

 

[Kallb123]

Just flashing stock firmware will not fix the "bootloader status: unknown"

Sent from my C6602 using xda app-developers app

I think the point is that flash tool was updated today. In the (flashtool) op it now tells you how to relock/unlock

Sent from my C6603 using Tapatalk 2

 

[DooMLoRD]

I think the point is that flash tool was updated today. In the (flashtool) op it now tells you how to relock/unlock

Sent from my C6603 using Tapatalk 2

Not really... There is no way currently available to RELOCK bootloader... What was updated was to fix the "bootloader unlocked: unknown" to "bootloader unlocked: yes"

Sent from my C6602 using xda app-developers app

 

[ratcom]

Not really... There is no way currently available to RELOCK bootloader... What was updated was to fix the "bootloader unlocked: unknown" to "bootloader unlocked: yes"

Sent from my C6602 using xda app-developers app

Thanks for the heads up

 

[dcoloane]

Not really... There is no way currently available to RELOCK bootloader... What was updated was to fix the "bootloader unlocked: unknown" to "bootloader unlocked: yes"

Sent from my C6602 using xda app-developers app

I was wondering too, thanks for your advice

 

[Kallb123]

Not really... There is no way currently available to RELOCK bootloader... What was updated was to fix the "bootloader unlocked: unknown" to "bootloader unlocked: yes"

Sent from my C6602 using xda app-developers app

Ah ok, thanks for the correction

Sent from my C6603 using Tapatalk 2

 

[AlienCraB]

I'll be the one that asks the obvious question here...

My guessed answer to this is no but... Will we get the so called DRM keys back? For instance the BE2?

 

[Klaus N.]

Unfortunately the answer is no!

 

[lzyllp]

back up a ta file from a lockbootloader device using flashtool and flash it to a unlock device？
The 30 18 lock file use what mention make？

 

[DooMLoRD]

back up a ta file from a lockbootloader device using flashtool and flash it to a unlock device？
The 30 18 lock file use what mention make？

hi lzyllp,

good to see u around

 

[lzyllp]

hi lzyllp,

good to see u around

good to see U here to,
wait for my Z,maybe next friday or sunday,
The xperia TX JB update make me angry,
It not release even later a month after T and V,The sony say follow next month but already 3.17

 

[greglord]

just to be clear- if i didnt backed up TA file before unlocking bootloader but would like to use stock SONY rom in future with Bravia engine working and what not, there's no way to get everything 100% back?

 

[torstorm]

is some way to put DRM keys back to unlocked device? will that work if DRM keys are taken from another xperia z phone (TA partition) ?

 

[snowman77]

is some way to put DRM keys back to unlocked device? will that work if DRM keys are taken from another xperia z phone (TA partition) ?

DO NOT flash another phones TA as it will brick your device.

DO NOT FLASH ANOTHER PHONES TA

 

[torstorm]

OK. tnx

 

[mobde3]

thanks it works on my C6602