Database Develop

[Q] Unlocked bootloader CM return to stock

Hi there,
I have an unlocked bootloader running CM10.1.
Is it possible to return to stock and receive updates OTA or via PC Companion from Sony?
Can I keep my unlocked bootloader and root?
Thanks,
Chester

To go back to stock just flash a stock FTF via flashtools.
You need to relock bootloader to be able to use OTA or PC companion to update. You risk bricking your phone if you try updating with an unlocked bootloader.
Sent from my C6602 using xda app-developers app

chesterchen said:
Hi there,
I have an unlocked bootloader running CM10.1.
Is it possible to return to stock and receive updates OTA or via PC Companion from Sony?
Can I keep my unlocked bootloader and root?
Thanks,
Chester
Click to expand...
Click to collapse
heres what i did!
took a stock ftf!
.434 to be precise!
flashed only kernel and unchecked all!
after that i pressd the BLU option and chose relock!
then i flashed the stock ftf as a whole!
wiped data and all!
PS i wiped data while flashing kernel too..that is important!
then after flashing i booted the device!
and restored my ta.img
!
then i flashed a stock rom via sony update service!
and i was successful!
:laugh: :good:

[Q] Help regarding flashing + root + unlock

Hey
Sorry for this noob questions but I wan't to be 100% sure i'm doing this right. I'm experienced with rooting, but mostly on samsung devices which I find a bit easier and less confusing.
First of all i'm running .290 with LB. And I want .290 with full root and UL and the ability to come back to stock .290 with LB anytime without loosing drmkeys, bravia engine etc.
Here is what I found out I need to do so far:
1. Download and flash via flashtools the .257 fw (prerooted/partial root?) from this thread http://forum.xda-developers.com/showthread.php?t=2572988
2. backup TA as described in a other thread.
3. unlock bl via the offical way and install
4. install XZDualRecovery
5. Use the first thread I linked to update to .290 firmware
6. Take a beer and enjoy fully rooted and unlocked 4.3?
And if I want to go back to stock LB without any loss of functions or sony beeing able to determine it was ever unlocked, i just restore my ta and flash my original .290 ftf?
Just need some conformation that this is the way to go and if there is anything in this process i need to be extra careful about?

after flashing .257 fw..... root it....then make TA backup.....then unlock BL.....then flash .290 fw....flash doomlord kernel....root ur fon....now u r good to flash .zip files through recovery...

bahafeld said:
And if I want to go back to stock LB without any loss of functions or sony beeing able to determine it was ever unlocked, i just restore my ta and flash my original .290 ftf?
Just need some conformation that this is the way to go and if there is anything in this process i need to be extra careful about?
Click to expand...
Click to collapse
Correct but I will recommend, in case you want go back to original, to flash the Stock .290 FTF first and then lock your Bootlader because if you have a custom kernel on it and you lock your phone, you can brick it. Full Root will not void your warranty so if you don't want to instal custom kernels you can easily keep your bootloader locked and get full root on .290.

How to reset xperia z1 totally (custom rom installed)

Hi I want to totally reinstall all the software and take the custom rom of my xperia z1. It has an unlocked boot loader.
Can I do this through PC companion?
If not, how would I do it? thanks

TagEHeuer said:
Hi I want to totally reinstall all the software and take the custom rom of my xperia z1. It has an unlocked boot loader.
Can I do this through PC companion?
If not, how would I do it? thanks
Click to expand...
Click to collapse
The easiest way is to use Flashtool. Just download an FTF of newest firmware and flash it using the software:
Once you are on a stock rom with stock kernel you can restore TA backup (if you have one), this will also relock your bootloader. It is best to restore TA on the same firmware that you did the backup.

Help for installing 4.4

I want help regarding installing 4.4 in my z1 c6902..
I have rooted and unlocked bootloader...
I made changes in system/app
what to do to receive 4.4 via ota via sony....
BUT MY SONY PC COMPANIAN IS READING MY DEVICE AND SHOWING UPDATE..WILL I UPDATE OR NOT??

pathanraj said:
I want help regarding installing 4.4 in my z1 c6902..
I have rooted and unlocked bootloader...
I made changes in system/app
what to do to receive 4.4 via ota via sony....
BUT MY SONY PC COMPANIAN IS READING MY DEVICE AND SHOWING UPDATE..WILL I UPDATE OR NOT??
Click to expand...
Click to collapse
Even though PC Companion is showing that your phone has an update, if you try to perform the update, you will get an error that the software has been modified (because of unlock bootloader) and you cannot proceed.
If you want to update a phone with unlocked bootloader, you need to use Sony Flash tool.
Note that updating via PC Companion or Sony Flash tool, will result in your root being lost.

hush66 said:
Even though PC Companion is showing that your phone has an update, if you try to perform the update, you will get an error that the software has been modified (because of unlock bootloader) and you cannot proceed.
If you want to update a phone with unlocked bootloader, you need to use Sony Flash tool.
Note that updating via PC Companion or Sony Flash tool, will result in your root being lost.
Click to expand...
Click to collapse
Where can i get file to flash with flash tool for my z1 C6903
Thanks in advanced

Look in the general section,
There is a sticky thread (Meaning its always near the top) full of the FTFs....

restoring TA backup

hi,
so i am currently on cm 11. To come back to stock sony , i have to flash an ftf , then relock the bootloader, root the phone and then restore the Ta backup ? or do i just restore ta backup without relocking the bootloader ??
Sent from my Xperia Z1

sruba209 said:
hi,
so i am currently on cm 11. To come back to stock sony , i have to flash an ftf , then relock the bootloader, root the phone and then restore the Ta backup ? or do i just restore ta backup without relocking the bootloader ??
Sent from my Xperia Z1
Click to expand...
Click to collapse
there is already a thread about that, but no matter
flash the original ftf (the one where you have backuped your TA!!), than relock the bootloader and at last, restore your TA BAckup now you are completely on stock and no one can figure it out, if your BL was unlocked or not

mo120697 said:
there is already a thread about that, but no matter
flash the original ftf (the one where you have backuped your TA!!), than relock the bootloader and at last, restore your TA BAckup now you are completely on stock and no one can figure it out, if your BL was unlocked or not
Click to expand...
Click to collapse
hi @mo120697, thanks fr the reply, but do i have to go back to the same FTF, because i was on stock .157, but stock . 157 generic IN FTF isn't available i think, I found .108 FTF

sruba209 said:
hi @mo120697, thanks fr the reply, but do i have to go back to the same FTF, because i was on stock .157, but stock . 157 generic IN FTF isn't available i think, I found .108 FTF
Click to expand...
Click to collapse
you can use .108 as well i think, what matters is that you are on 4.4.4 when you have backuped on 4.4.4 but btw, i can share .157 BAL with you, from baltic states, works well with non baltic states
regards Mo