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[Q] UB already, can I still do TA backup?

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infra4800
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Default [Q] UB already, can I still do TA backup?

I bought used Xperia Z1, and today went to service menu and noticed the bootloader is already unlocked.

This is I understand should be procedure:

TA backup > Unlock bootloader > Root > Downgrade

question is can I still do TA backup now? knowing it already came with unlocked bootloader ?

P.S.
ver - 4.3 .136
root - no, (no SuperUser seen)

DRM keys -> present
Sony Xperia Z1
 
hxq88
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You can check DRM status
Quote:
Originally Posted by eclyptos View Post
Type *#*#7378423#*#* on your phone and go to Service Test > Security, if you have [Unknown Error] instead of [Key OK] they are lost, to restore them the only way is to use Backup of your TA. If you have all [Key OK] they are OK!

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gregbradley
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(Last edited by gregbradley; 29th May 2014 at 11:11 AM.)
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simple answer is no

You have wiped your ta partition when unlocking

however, there is no need to unlock the bootloader to root, just follow the link in my signature

also, you need root to backup the TA

And I bet your bootloader is not already unlocked, they do not come like that

dial
*#*#7378423#*#*
goto service info and configuration. Post what the last line says

I bet it says

bootloader unlock allowed: yes

That means you are able to unlock it, but it is not unlocked yet

If it was unlocked it would say

Bootloader unlocked: yes

How to get root on Xperia Z1 with KitKat 4.4.2, 4.4.3 & 4.4.4

If you are unsure, then read this.
If you are still unsure, watch this.

 

My contributions.
If I have seen further it is by standing on the shoulders of giants. Sir Isaac Newton


[X10] | [NEO] | [Xperia T/TX] |
[Xperia Z1]
You are free to share my work, but please provide the correct credits and a link to my original thread.


 
infra4800
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Quote:
Originally Posted by hxq88 View Post
You can check DRM status



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Quote:
Originally Posted by gregbradley View Post
simple answer is no

You have wiped your ta partition when unlocking

however, there is no need to unlock the bootloader to root, just follow the link in my signature

also, you need root to backup the TA

And I bet your bootloader is not already unlocked, they do not come like that

dial
*#*#7378423#*#*
goto service info and configuration. Post what the last line says

I bet it says

bootloader unlock allowed: yes

That means you are able to unlock it, but it is not unlocked yet

If it was unlocked it would say

Bootloader unlocked: yes


Thanks for replying I am new to Sony phones, coming from Galaxy world !!!

here is what I get in service menu for DRM keys and Unlock bootloader (attached pics)

so this is what I understand: it is unlocked bootloader,
I can root it
I can install custom roms etc.
but incase anything goes wrong, I cannot go back and install stock rom, or downgrade from 4.3 (currently) to 4.2.2 ? and claim warranty ...
Attached Thumbnails
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Sony Xperia Z1
 
gregbradley
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Quote:
Originally Posted by infra4800 View Post
Thanks for replying I am new to Sony phones, coming from Galaxy world !!!

here is what I get in service menu for DRM keys and Unlock bootloader (attached pics)

so this is what I understand: it is unlocked bootloader,
I can root it
I can install custom roms etc.
but incase anything goes wrong, I cannot go back and install stock rom, or downgrade from 4.3 (currently) to 4.2.2 ? and claim warranty ...
yes, just flash XZDR kernel from here http://nut.xperia-files.com/
http://prntscr.com/3nnvhr

Just extract boot img, flash using fastboot, then enter recovery and flash the whole .zip to get wifi modules etc


Then flash SuperSU.zip from chainfire
http://download.chainfire.eu/420/Sup...erSU-v1.99.zip


then enter philz recovery, goto philz options and tick "fix root on reboot"
reboot to system and fix root.

All done.

Yes you can flash stock FTF files and yes you can downgrade, but there is no point.

How to get root on Xperia Z1 with KitKat 4.4.2, 4.4.3 & 4.4.4

If you are unsure, then read this.
If you are still unsure, watch this.

 

My contributions.
If I have seen further it is by standing on the shoulders of giants. Sir Isaac Newton


[X10] | [NEO] | [Xperia T/TX] |
[Xperia Z1]
You are free to share my work, but please provide the correct credits and a link to my original thread.


 
Riyal
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You can downgrade but do take not that sometimes you lose your IMEI when skipping major downgrades for example when you're on android 4.4 and you flash a android 4.2 ftf you'll lose your IMEI. Workaround is you have to flash android 4.3 1st before android 4.2
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