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[Tutorial] Relock Xperia Z bootloader

15th March 2013, 04:22 PM |#1  
Aerys's Avatar
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Good day my friends

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
Last edited by Aerys; 15th March 2013 at 05:19 PM.
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15th March 2013, 04:31 PM |#2  
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can you link to the Flashtool version you are using just to save any confusion
15th March 2013, 04:45 PM |#3  
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is it no any problem after using this method to relock Xperia Z???
15th March 2013, 04:50 PM |#4  
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http://forum.xda-developers.com/show....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?
15th March 2013, 04:58 PM |#5  
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Re: [Tutorial] Relock Xperia Z bootloader
Quote:
Originally Posted by Aerys

Good day my friends

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
15th March 2013, 05:00 PM |#6  
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Re: [Tutorial] Relock Xperia Z bootloader
Quote:
Originally Posted by DooMLoRD

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
15th March 2013, 05:19 PM |#7  
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Re: [Tutorial] Relock Xperia Z bootloader
Quote:
Originally Posted by Kallb123

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
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15th March 2013, 05:44 PM |#8  
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Quote:
Originally Posted by DooMLoRD

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
15th March 2013, 07:09 PM |#9  
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Quote:
Originally Posted by DooMLoRD

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
15th March 2013, 08:59 PM |#10  
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Re: [Tutorial] Relock Xperia Z bootloader
Quote:
Originally Posted by DooMLoRD

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
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