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[Tutorial] Xperia Z1 Bootloader Unlocking/Relocking

OP DooMLoRD

11th September 2013, 03:35 PM   |  #1  
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Quick tutorial for unlocking & relocking the bootloader of the Xperia Z1


this is the official way to unlock bootloader

the bootloader-camera bug has been fixed in the 4.3 update!

Quote:
Originally Posted by DooMLoRD

Sony confirms bootloader unlock issue on Z1:

Warning! At the moment, unlocking the Xperia™ Z1 boot loader will stop the camera functionality.

http://unlockbootloader.sonymobile.c...ported-devices




WARNING!

MAKE TA BACKUP BEFORE UNLOCKING BOOTLOADER!



After unlocking bootloader the camera can not be used on stock ROM!

Relocking bootloader will NOT help!

Just restore TA, and the camera will work again!




if you want to backup the TA or keep ur DRM keys,first root the device and then check this out




Warning!

This procedure will wipe the /data partition of your phone, so you will loose all ur stored data, settings. SDCARD will BE WIPED!!!

Quote:

For Xperia™ devices released 2013 or later (for example Xperia™ Z and Xperia™ ZL), the SD card of your device will be formatted and you will lose all content (for example photos, music, videos) when you unlock the boot loader.

DRM keys WILL be lost forever

Quote:
Originally Posted by schaggo

I'd add what losing DRM keys means, e.g. no more Music ID/Gracenote within the Walkman app plus probably most importantly, as asked all the time and all over the place in the T/mint forums: loss of Bravia Engine.


older Xperia devices sometimes got issues after unlock of bootloader (BRICK after FOTA update) - you have been warned



why to unlock bootloader?
  1. u can flash custom ROMs/Kernels
  2. u dont need to worry if the new firmware can be rooted or not as with unlocked bootloader u can always ROOT ur device
  3. Sony gives sneak-peaks/preview builds of latest OS which requires unlocked bootloaders, as they did with Xperia 2011/2012 line, so who knows may be Sony may give early builds of next android OS



Most of this is taken from lollylost100's his tutorial from ARC thread (all credits for that concise tutorial go to him, i have elaborated on a few things and added device specific changes)


btw i dont have this device, most of this testing was done remotely on a users phone... so thanks a lot to him for helping out!!!


[ before we begin unlocking bootloader ]
  • get the IMEI code for ur device: type *#06# in phone dialer to find it out, note only the digits (no dashes)
  • download the fastboot package
  • IMPORTANT: if you are using Windows 8 you will need to enable few things to allow driver installation
  • download the latest FlashTool Xperia Driver Pack and install fastboot drivers (common) & adb drivers for this device from the list!
  • make sure u have a windows PC with USB cable to connect the phone
  • power down ur phone and keeping the Volume Up button pressed connect the USB cable to PC this will trigger FASTBOOT mode and windows will start driver installation, which should be automatically done
  • once drivers are installed just disconnect cable and power on device


[ how to unlock ] (official way)
  1. Go to: http://unlockbootloader.sonymobile.com/ and read everything!
  2. At the bottom click 'Start Unlocking the Bootloader'
    Quote:

    First, you should confirm that it is possible to unlock the boot loader of your phone by checking the service menu. In your phone, open the dialler and enter *#*#7378423#*#* to access the service menu.

    In your phone, tap Service info > Configuration > Rooting Status. If Bootloader unlock allowed says Yes, then you can continue with the next step. If it says No, or if the status is missing, your device cannot be unlocked.

  3. after u have verified that u can unlock bootloader, scroll to the bottom of the page and click "Continue"
  4. you will get numerous prompts, read all info and if u agree click on "Accept"/"OK"/"Proceed"
  5. finally u will get a "Create Unlock request" page, enter your IMEI (sometimes the last digit needs to be removed for this to work), name and email address
  6. You should now receive your unique unlock key via EMAIL, SAVE THIS KEY SAFELY
  7. Extract fastboot_with_Android_USB_file.rar and open fastboot folder
  8. Hold SHIFT and right click on the background of the folder
  9. Select 'Open command window here'
  10. Connect your phone in fastboot mode (turn phone off, hold Volume UP button and plug in USB Cable) [make sure drivers are installed as explained above)
  11. In the cmd windows type in fastboot.exe -i 0x0fce getvar version
  12. If a value is returned (it will return 0.5), it means the phone is correctly connected
  13. Type in fastboot.exe -i 0x0fce oem unlock 0xKEY and replace KEY with the key which u received earlier.
  14. You're device should now be bootloader unlocked


If this tutorial is too much for you then itskapil wrote a step-by-step guide (and recorded a video also):
-Instructions: http://www.theandroidsoul.com/how-to...-play-neo-pro/
-Video: http://www.youtube.com/watch?v=LRH3pC7MhEA
(the above videos and some steps are for Xperia 2011 devices, but most the steps are same for Xperia Z)




Relock procedure is posted here



regards,

DooMLoRD
Last edited by DooMLoRD; 12th February 2014 at 09:36 PM.
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11th September 2013, 03:37 PM   |  #2  
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Exclamation Relocking bootloader
With the latest release of Flashtool it is now possible to relock bootloader.

Download the latest flashtool from:
http://forum.xda-developers.com/showthread.php?t=920746



Important

DO NOT USE ANY FTF TO RELOCK BOOTLOADER! THOSE OLD FTFs DO NOT WORK FOR THE 2013 DEVICES!!!


before u relock bootloader u have to be on pure stock kernel (flash only the kernel.sin using flashtool), else the device WILL NOT BOOT after relock



Steps:
  1. now start Flashtool and click on BLU button
  2. u will be asked to connect device in flashmode
  3. once u connect the device u will get a prompt to "Relock"
  4. click on it and when prompted disconnect the device



Want to UNLOCK again after relocking? read this!
Last edited by DooMLoRD; 6th May 2014 at 07:25 PM.
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11th September 2013, 03:59 PM   |  #3  
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new driver package uploaded!



Supports Xperia Z1 Compact, Z Ultra (including WiFi only) & Z1 !


NEW:

Flashtool Driver pack v1.2 - 20140204


OLD:

Flashtool Driver pack v1.1 - 20130911
Last edited by DooMLoRD; 4th February 2014 at 09:06 AM.
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13th September 2013, 03:01 PM   |  #4  
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Can anyone confirm that unlocking bootloader on Z1 will wipe it's DRM keys. If so, will backing up TA partition as of Z and Z ultra will prevent this? I do not have the device yet.
13th September 2013, 04:22 PM   |  #5  
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Quote:
Originally Posted by kristiancarl

Can anyone confirm that unlocking bootloader on Z1 will wipe it's DRM keys. If so, will backing up TA partition as of Z and Z ultra will prevent this? I do not have the device yet.

yes will be same as Z, Z Ultra
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14th September 2013, 03:51 AM   |  #6  
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After unlocking the camera can not be used,Back lock is useless,ust restore TA, the camera can work
Last edited by yeeson; 14th September 2013 at 01:58 PM.
15th September 2013, 05:37 AM   |  #7  
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Hope Sony fix this bug in next firmware soon
15th September 2013, 05:41 AM   |  #8  
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Quote:
Originally Posted by lzyllp

Hope Sony fix this bug in next firmware soon

hi mate glad to see u after a long time

do u have the Z1?

have u unlocked device?

are you willing to test custom kernel?


if answer to all the above is yes then send me a p.m.
15th September 2013, 07:18 AM   |  #9  
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Quote:
Originally Posted by DooMLoRD

hi mate glad to see u after a long time

do u have the Z1?

have u unlocked device?

are you willing to test custom kernel?


if answer to all the above is yes then send me a p.m.

My Z1 coming soon,maybe this night or tomorrow.
custom kernel?after restore TA the phone maybe lock again.How to flash it?
15th September 2013, 08:11 AM   |  #10  
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Quote:
Originally Posted by lzyllp

Hope Sony fix this bug in next firmware soon

I don't think this is a bug, I think they are trying to prevent the customers unlocking their bootloaders.

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