Database Develop

[Q] Restore to stock

Hi, i have cyanogenmod installed on my xperia z with bootloader unlocked.
before unlocking the bootloader i have used the tool BACKUP TA to save DRM keys
If i want to restore my device to stock rom and restore also the warranty is this the right procedure?
- Relock the bootloader with falshtool
- Flash a sony stock firmware FTF with flashtool and full wipe
- Restore DRM keys with BACKUP TA

Skip first one,flash stock rom and restore TA.
Bootloader will be locked again once you restore TA.
Sent from my C6603 using xda premium

[Q] stuck at boot

Hi everybody,
after reading about how to upgrade & root the Xperia SP on the 4.3 firmware I followed the guides to get everything set up.
Now, after being nearly there I'm stuck with a black booting screen.
Here follow the steps I did undertake so far, any help to resolve my issue would be very welcome.
I started with firmware 12.0.A.2.245 rooted with Doomlords method (flash old kernel, root, flash .245 kernel again)
1 backup contacts/messages etc
2 do TA partition Backup with Backup-TA
3 update firmware using PC-Companion
4 unlock bootloader with official sony guide
5 fastboot flash cwm / superSU
---> everything worked fine so far (phone was operational), now I wanted to get the screen mirroring working - meaning the bravia engine. So I went for
6 Backup-TA check backup integrity with dry restore
7 Backup-TA restore TA partition
last step of the restore was: reboot device, which got me to the black screen - which is where I am stuck now.
All I managed so far is entering the fastboot mode, I could confirm this working by issuing a "fastboot devices" which listed the phone as available.
Anyone got any ideas to what went wrong and how to fix this?

update: after going through the unlock bootloader procedure again the phone boots normally again ( fastboot.exe -i 0x0fce oem unlock 0x[...] ) . Now the last problem is getting the TA partition back.
Is this even possible while keeping root?

Flash stock kernel .266 before restoring TA partition.
go to flashmode and flash the kernel.ftf, links of which can be found by searching.
this problem has been posted as FAQ in Bootloader unlocking relocking thread.

Thanks! I'll try this. I thought you only had to reflash the stock kernel if you wanted to relock the bootloader

[Q] How to relock bootloader on Xperia z1

Hello,
I have unlocked my z1 c6902 bootloader officially from sony website. I have backed up the TA partition but how to use TA partition and relock bootloader. I am on custom firware CM11. Please help i wanna re lock bt because of warranty purpose.

vijay99 said:
Hello,
I have unlocked my z1 c6902 bootloader officially from sony website. I have backed up the TA partition but how to use TA partition and relock bootloader. I am on custom firware CM11. Please help i wanna re lock bt because of warranty purpose.
Click to expand...
Click to collapse
relock your bootloader using Flashtool
guide over here http://forum.xda-developers.com/showthread.php?p=45496437#post45496437
then restore TA partition using the tool you used to backup.
http://forum.xda-developers.com/showthread.php?t=2292598

Thankyou for the help but what is pure stock kernal and flash kernal.sin? I am on cm11. Pls respond.

Just restore your TA then flash a FTF
That's it... all done....

I have first TA restore or flash a ftf? If TA so i have to do it in CM 11?

vijay99 said:
I have first TA restore or flash a ftf? If TA so i have to do it in CM 11?
Click to expand...
Click to collapse
flash ftf first then restore TA.

I don't have to root the phone? I on CM 11 I have to directly flash the ftf file and restore TA?? How to restote TA any video??

TA Restore
vijay99 said:
I don't have to root the phone? I on CM 11 I have to directly flash the ftf file and restore TA?? How to restote TA any video??
Click to expand...
Click to collapse
How did you backup your TA ?
The same tool should also have a restore option.
Whatever rooted firmware you are in...you can always restore TA. But once if you restore a TA of locked bootloader. You cant boot into CM based roms. Or any other stock based ROMS with different kernel. As locked bootloader = Stock Sony Kernel ONLY!
So once if you restored the TA and rebooted and your phone doesnt boot but gives a orange/red LED blink. Dont worry. Flash your FTF and then boot to the official stock rom.
P.S : You can also flash a FTF on unlocked Bootloader.

So now first off all I will flash a .ftf file say eg .757 and once the phone boot up I will restore my TA partition and now BT is locked ryt? Any video how to restore TA backup??
Sorry for so much trouble...

vijay99 said:
So now first off all I will flash a .ftf file say eg .757 and once the phone boot up I will restore my TA partition and now BT is locked ryt? Any video how to restore TA backup??
Sorry for so much trouble...
Click to expand...
Click to collapse
Yes
You don't need a video,just run the tool & restore like how you backup TA

Thanks I will try and let you know..!!:good:

Need help restoring TA Partition

Hey guys,
I have backed up my TA partition when i went to CM and uploaded it to OneDrive. Now i want go back.
Steps I took so far:
I flashed generic firmware with flashtool and locked the bootloader. Then i rooted the phone with vroot to geht TA partition tool working.
Now when i run the tool i get INTEGRITY CHECK Failed - Backup has gone corrupted while pushing Please try again.
Someone can help me ?
Cheers
Moritz

DRM Keys

Hey guys.
I have a Sony Z1 C6903. I installed DZ1Striker rom and after that i decided to unlock bootloader. i have backed up TA and ive unlocked bootloader.
now after reboot phone it wiped. and after it boot successfully i checked md5 of the image and TA Partion and they are different.
now my question is that can i restore my image or i lost my DRM keys?