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
Unlocking BL will format the /data partition. I made cwm backup before. After unlocking, can i safely restore the data partition? Afterwards the phone should be in state as before unlocking, right?
peters. said:
Unlocking BL will format the /data partition. I made cwm backup before. After unlocking, can i safely restore the data partition? Afterwards the phone should be in state as before unlocking, right?
Click to expand...
Click to collapse
Hi @peters,
If ur considering unlocking ur BL, then i hope youve made a backup of your TA partition(the partition containing DRM keys needed for Bravia Engine 2)?Restoring the data partition wont relock your bootloader. If u want to relock your bootloader then you have to flash a stock kernel,make sure you are rooted and then restore your TA partition. Or you can use Flashtool to relock your BL.
Hope this helps
Yes i made backup of TA. With restoring of Data partition i wanted to have the phone in the same state as before unlocking. Of course with the difference of loosing Bravia and not using Fota.
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:
I bought sp once again after the first one got broken but this one have bootloader unlocking not allowed(but no simlock).
Correct me if i'm wrong: If i do try unlocking bootloader and it won't work, can i restore TA and flash stock and phone 'll be allright?
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?