How to backup TA partition on Sony Xperia Devices

If you want to flash a custom ROM on your Sony Xperia device, you will always need to unlock the bootloader first. If you try to do it without unlocking bootloader, you might just brick your device. The bootloader of any device is a set of codes that run while device is booting up. If the bootloader is locked, you cannot install a custom kernel on your device. If it is a stock based ROM, using stock kernel, then you can easily use the ROM.

The TA partition of the device contains DRM keys, Bravia Engine code and warranty of your device. If the TA partition is lost once, it can not not be recovered. You cannot claim warranty. The Bravia Engine will not work in Album app. If you backup TA partition before unlocking bootloader, then you can restore it right away after locking it again and get back the DRM keys intact, Bravia Engine working in Album app and warranty can be caimed again. In short, your phone will be back in factory state once again.

Few thing you need to remember:

  1. This will work only if your device is in the compatibility list (See at the bottom of this page)
  2. This will only work if your device is properly rooted
  3. You cannot use someone else’s backup or it will hard brick your device permanently
  4. If you restore the TA partiton on a non-stock kernel, it will soft brick your device, which can be fixed by flashing a firmware using flashtool (See this Guide)
  5. Restoring TA partiton and relocking bootloader will put your phone back in factory state with warrant not being void
  6. There is no specific size for backup of TA partition. It varies with different devices. If you see the message saying Backup successful, then you have correct backup
  7. You need to backup before TA partition before unlocking the bootloader for the first time

Important: For some Xperia devices, rooting is not poosible without unlocking bootloader in Android 4.3 and later. Therefore, to backup TA partition in such devices, you need to do it in firmware that does not require bootloader unlocking like Android 4.1.x or 4.2.x or downgrade your device to do it.



  1. Download and extract TA Backup tool from the link given above
  2. Inside the folder loacate a file with .bat extension
  3. Now make sure that your device is normally booted up and rooted
  4. Connect your device with PC using USB cable
  5. Now run the .bat file
  6. Follow on-screen instruction until backup is completed
  7. If there is a problem in connectivity, try turning USB Debugging on and off
  8. That’s all! Now just save this backup somewhere safe for future use

Compatibility List

Sony Xperia Z1
Sony Xperia Z Ultra
Sony Xperia Z
Sony Xperia ZL
Sony Xperia ZQ
Sony Xperia ZR
Sony Xperia ION
Sony Xperia S
Sony Xperia SL
Sony Xperia SP
Sony Xperia Acro S
Sony Xperia T
Sony Xperia TL
Sony Xperia TX
Sony Xperia M
Sony Xperia V
Sony Xperia P
Sony Xperia L
Sony Xperia U
Sony Xperia Go
Sony Xperia Sola
Sony Xperia Miro
Sony Xperia Tipo
Sony Xperia J
Sony Xperia E
Sony Xperia Tablet Z
All above mentioned smartphones are confirmed to be working, while it should be working with other 2012 and above Sony Xperia smartphones. It will not work with Sony Ericsson Xperia smartphones.


Apps for PC +Hayder Ameen is a Computer Science student and Android is his passion. Other than that, he is a gym addict and a great sportsman. Connect with Hayder on Facebook and Twitter Email: Site: WhatsApp For PC

36 thoughts on “How to backup TA partition on Sony Xperia Devices

  1. i Have a problem… to install cwm is recommended to do a backup of the partition, but i i’m tryin’ to root my xperia while i have already upgraded to 4.3 so now it’s unrooted and i can’t do the backup with the tool… what can i do?

    -i’m following: already this guide

    -and this one:

    hurry thx in advance

    1. If you have already unlocked the bootloader of your device, then you cannot backup TA partition. It is only possible on a rooted phone with locked bootloader. For Xperia Z it will only be possbile on Android 4.2.2.

  2. Hello. Rooting is not something you should be worried about. Previous firmware versions of Xperia SP can be rooted without unlocking bootloader. The the TA partition would have been backed up.
    Backing up TA partition is not essential. It is essential only if you do not want to lose Bravia Engine. You will get Bravia Engine to be working only after relocking bootloader.

  3. Rooting does no harm to phone in any way. Just be careful with how you use the root privelages. If you cannot backup TA partition and afraid to lose warranty, then you may wait for a rooting method for locked bootloader.

    1. Hello. Rooting does not harm the phone. I already know that.
      By the way thanks for trying to help!
      2 xda developers users helped me on how to solve my problem. Thank you 🙂

    1. Well I think this comment, should be deleted. 😐 trust me, I am a webmaster too, and I don’t think me, requesting for you to unmark my last comment, should be exposed into public. Anyways very thank you. 🙂

      Sorry for being off-topic, did you really marked the comment as spam, or its the automation spamming filter made by Disqus?

      Again thank you!

    1. It was there for people who insists on using the old v4 version of TA BACKUP tool.

      Just don’t mind about it. Use the latest firmware and only use other functions except that converttov4 one.

  4. I have an Xperia SP currently running 4.1.2 rooted, bootloader locked.
    My aim is to upgrade to 4.3.3 and root, for which i will have to unlock the bootloader. To do so I need a TA partition, for which again, root is required.
    So, my question is that is it okay if I take a TA Backup now [in 4.1.2] and then upgrade OTA and unlock bootloader, root and then restore the 4.1.2 TA backup onto 4.3.3 in order to restore DRM keys and Relock the bootloader?
    Has anyone done this?
    is it safe?

    1. Hello Hayder, I have the same problem although the phone is rooted. For the second time I’ve tried it was requesting root permissions much longer, but still no result.

  5. I’ve installed a dual recovery on my xperia z1c and I’ve done the backup before to install it.
    If now I restore the backup, i wil lose the dualrecovery?

  6. for rooting the z1 compact it needs to backup TA partition, and for backup TA partition it needs to be rooted. what should i do? how can i root it without loosing warranty and bravia engine?

  7. I rooted my phone but wasn’t able to install cm11 maybe dues to old cwm recovery. Still on stock ROM with unlocked bootloader done via flashtool for xperia. But my earpiece and loudspeaker(only for games and music) don’t work. Loudspeaker works when an alarm rings or someone calls. What should I do?

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