Database Develop

[Q] Pre-rooted FTF over top of non-rooted? Locked bootloader.

My Z1 (C6906 sim-unlocked) will arrive tomorrow, and I'm looking for the simplest route to getting root and backing up my TA prior to unlocking my bootloader.
On other devices, the system partition is not signed, so I've been able to use the stock tools to flash just a pre-rooted system partition to gain root, without having to muck about with exploits. Is there anything like that possible on the Z1? I was all set to download the ftf listed in this thread, but then I realized it's for C6903.. I don't see a non-carrier-specific FTF for C6906 of the same version #.
I do see this thread - can I follow that to get root without losing my TA/DRM keys, and move on from there?
I apologize for having to ask, there is a LOT of info about these devices, some seems to be old and conflicting, and as a newbie to these devices, I can't really tell what's the good info yet.

araemo said:
My Z1 (C6906 sim-unlocked) will arrive tomorrow, and I'm looking for the simplest route to getting root and backing up my TA prior to unlocking my bootloader.
On other devices, the system partition is not signed, so I've been able to use the stock tools to flash just a pre-rooted system partition to gain root, without having to muck about with exploits. Is there anything like that possible on the Z1? I was all set to download the ftf listed in this thread, but then I realized it's for C6903.. I don't see a non-carrier-specific FTF for C6906 of the same version #.
I do see this thread - can I follow that to get root without losing my TA/DRM keys, and move on from there?
I apologize for having to ask, there is a LOT of info about these devices, some seems to be old and conflicting, and as a newbie to these devices, I can't really tell what's the good info yet.
Click to expand...
Click to collapse
You can follow the second thread to get working root on 4.4. But if you want to unlock your bootloader then you have to backup your ta

Ahki767 said:
You can follow the second thread to get working root on 4.4. But if you want to unlock your bootloader then you have to backup your ta
Click to expand...
Click to collapse
Just to be clear, the TA will still be intact after following the second thread, so that I CAN backup my TA before unlocking?
Thanks for the quick response.

araemo said:
Just to be clear, the TA will still be intact after following the second thread, so that I CAN backup my TA before unlocking?
Thanks for the quick response.
Click to expand...
Click to collapse
Backup your TA after rooting and use the PC for Backup. And save them. Then unlocking.
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Thanks both of you. I did understand how to backup the TA/DRM keys, but I wanted to make sure I could get rooted without losing them first (and I'm really glad there's a root option that doesn't rely on a chinese .exe of unknown repute).

Yes first root then backup the TA then unlock bootloader. It is safe and easy. Use this ta backup tool http://forum.xda-developers.com/showthread.php?t=2292598
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What happens if i flash a different Z1's TA back up?

So I took a TA backup of my first Z1. Due to some defect i got a new z1 and i forgot to take a backup of its TA partition before i unlokced it. So i just wanted to know what will happen if i flash the previous Z1's TA partition on my current z1.

ravi_buz said:
So I took a TA backup of my first Z1. Due to some defect i got a new z1 and i forgot to take a backup of its TA partition before i unlokced it. So i just wanted to know what will happen if i flash the previous Z1's TA partition on my current z1.
Click to expand...
Click to collapse
NEVER NEVER NEVER do something like this.
It'll hard brick your device 100%.
Sent from my D6503 using Tapatalk

funky0308 said:
NEVER NEVER NEVER do something like this.
It'll hard brick your device 100%.
Sent from my D6503 using Tapatalk
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Click to collapse
thanks. that means i can never use pcc ever again

ravi_buz said:
thanks. that means i can never use pcc ever again
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Click to collapse
Probably...but you have flashtool and Sony finally removed all that stupid things that was breaking up when you unlocked bootloader.
You still have 99.9% of device / software / so it's not that bad
Sent from my D6503 using Tapatalk

Use flashtool to relock, then you can use pccompanion again
Sent from my C6903 using XDA Premium 4 mobile app

gregbradley said:
Use flashtool to relock, then you can use pccompanion again
Sent from my C6903 using XDA Premium 4 mobile app
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Click to collapse
Wait! are you serious? I can use flashtool to re lock it? will it work? Then why do we have so much discussion around taking TA backup?
Or is it that TA copys all the DRM keys to that we can use all the Sony fancy stuff and locking via flashtool just looks down the boot loader without restoring those DRM keys

Flashtool relocks the bootloader but it does not restore the TA backup.
You will also have to use flashtool to unlock it again as the official method will not work. It sees the DRM keys have gone and assumes the phone is already unlocked so aborts the procedure, but flashtool (from v0.9.16.0) will work to re-unlock it. Earlier versions need some reconfiguration of folders to make it work, so always use the latest version

funky0308 said:
It'll hard brick your device 100%.
Click to expand...
Click to collapse
Just curious, why does using the wrong TA hard-brick your phone? No soft-brick? Is TA a partition with just keys?
Sorry for not starting a new thread.

kentexcitebot said:
Just curious, why does using the wrong TA hard-brick your phone? No soft-brick? Is TA a partition with just keys?
Sorry for not starting a new thread.
Click to expand...
Click to collapse
Good question. Even i would like to know about this

Xperia devices will*definitely*be bricked if incorrect data is written to the TA partition. The TA partition contains IMEI, serial number and other important data and probably include some sort of integrity check. Even flashing the TA partition with the one from another device of the same model bricks it. No fastboot and no flashtool will work after flashing wtong TA backup.
This is not just a theory, there are many users who actually did that - just check XDA
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Dont do this

Backup and restore imei

hi all, can i do backup of imei? and restore if i have problems ?
I want to modding the phone and I saw that there is a minimal chance of losing the imei.
Thanks all

The TA partition contains the device IMEI and can be backed up if you're rooted.
Backup TA
Also, for the future - Do Not Post Questions/Help/Troubleshooting in General
Sent from my C6603 using Tapatalk

Can i Flash Custom Recovery TWRP Without unlock Bootloader ?

Hi guys ,,
I have P10 Lite and I went ask Can I Flash Custom Recovery "TWRP" Without unlock Bootloader ?
Thanxs

Without unlocked BL you are not able to flash anything. Although I do not know exactly if this is true but the allow unlocking option in develeoper settings should be the answer..
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freibergisch said:
Without unlocked BL you are not able to flash anything. Although I do not know exactly if this is true but the allow unlocking option in develeoper settings should be the answer..
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Click to expand...
Click to collapse
thanks bro for answer me
But i have problem if i unlocked BL i cant lock again my phone enter in loop boot only
i think i need flash stock boot.img and Recovery.img then lock again ? right!

This could be possible. Flash them and turn on the unlock option. Then you should be able to flash whatever you want to.
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Relocking Bootloader?

Hello everyone, I unlocked my bootloader for root purposes and backed up my TA image.
Restoring TA cures the camera problems, but my attest keys are lost... (what are they for?)
Anyway is there a way now to get back to stock and relock the bootloader?
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