A backup from another device than yours is useless for you. To restore your TA partition you MUST have an own backup from YOUR device, made with locked bootloader and rooted.
Once you have unlocked bootloader you can't get backup of TA partition. TA backup must be before unlock bootloader. Now if you want to go back to stock you can try with drm fix.I am running LineageOS on my Xperia Z Tablet. I want to go back a stock rom and restore my TA partition.
What is the right order.
1. Restoring Stock Rom with Sony Flash Tools
2. Rooting the device
3. Backuping TA Partition
Is this correct? Thank you for your help!
[ ------------------------------------------------------------ ]
[ Backup TA v9.11 for Sony Xperia ]
[ ------------------------------------------------------------ ]
[ 1. Backup ]
[ 2. Restore ]
[ 3. Restore dry-run ]
[ 4. Convert TA.img ]
[ 5. Quit ]
[ ------------------------------------------------------------ ]
Please make your decision: [1,2,3,4,5]?2
=======================================
RESTORE
=======================================
When you continue Backup TA will perform a restore of a TA partition
backup. There will be many integrity checks along the way to make sure
a restore will either complete successfully, revert when something goes
wrong while restoring or fail before the restore begins because of an
invalid backup. There is always a risk when writing to an important
partition like TA, but with these safeguards that risk is kept to an
absolute minimum.
Are you sure you want to continue? [Y,N]?Y
Waiting for USB Debugging...OK
=======================================
CHOOSE BACKUP TO RESTORE
=======================================
[1] TA-backup-20160722.161505.zip
[Q] Quit
Please make your decision:1
Are you sure you want to restore 'TA-backup-20160722.161505.zip '? [Y,N]?Y
=======================================
EXTRACT BACKUP
=======================================
7-Zip (A) 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18
Processing archive: backup\TA-backup-20160722.161505.zip
Extracting TA.blk
Extracting TA.img
Extracting TA.md5
Extracting TA.serial
Extracting TA.timestamp
Extracting TA.version
Everything is Ok
Files: 6
Size: 2097244
Compressed: 114577
=======================================
INTEGRITY CHECK
=======================================
OK
=======================================
COMPARE TA PARTITION WITH BACKUP
=======================================
OK
=======================================
BACKUP CURRENT TA PARTITION
=======================================
4096+0 records in
4096+0 records out
2097152 bytes (2.0MB) copied, 0.028861 seconds, 69.3MB/s
=======================================
PUSH BACKUP TO SDCARD
=======================================
649 KB/s (2097152 bytes in 3.151s)
=======================================
INTEGRITY CHECK
=======================================
FAILED - Backup has gone corrupted while pushing. Please try again.
*** Restore unsuccessful. ***
Once you have unlocked bootloader you can't get backup of TA partition. TA backup must be before unlock bootloader. Now if you want to go back to stock you can try with drm fix.
Yes, you are going rightSorry, I wanted to say 3. Restoring TA Backup.
Of course I created a backup before I unlocked the bootlader.
Is this the correct way?
I am running LineageOS on my Xperia Z Tablet. I want to go back a stock rom and restore my TA partition.
What is the right order?
1. Restoring Stock Rom with Sony Flash Tools
2. Rooting the device
3. Restoring TA Backup
Is ta back up important.??
But ididnt backed up.
ANy way to restore??
Yes, ta backup is important. ta backup must be done before unlocking bootloader. Once you unlock bootloader you lost DRM keys which affect Bravia engine and Camera clearity. when you want to back to stock and it is useful to get back DRM keys of your devices. DRM keys are device specific so you need your DRM keys for Sony Bravia engine and Camera clearity.
You can't get it back but you go with DRM FIX threads for your device
No, it doesn't work on Android N.For Z5, will this work on Nougat? The only tutorial I could find for reverting to mm is in Vietnamese and I'm too scared to mess something up
This one https://forum.xda-developers.com/crossdevice-dev/sony/universal-dirtycow-based-ta-backup-t3514236 worked when I backed up my Z3C's TA partition.My phone is Z3 Compact D5803. Rooted, usb debug is enabled. BackupTA is run as administrator. But it didn't work.
This one https://forum.xda-developers.com/crossdevice-dev/sony/universal-dirtycow-based-ta-backup-t3514236 worked when I backed up my Z3C's TA partition.
fastboot erase ta
fastboot flash ta my_ta_backup.img
ok another update....somehow i managed to go past usb debugging screen. removed the sony pc companion....installed sony z ultra ADB drivers, reconnected the device and started backup TA. it took a successful backup. then I tried to test the back using the option restore -dry run. but after running that function i came up with this error. now what is this? should i ignore this error?
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Backup-TA-9.11\tools
Backup-TA for Sony Xperia Z / ZL
Backup-TA can backup and restore the TA partition of the device. When you create a backup before unlocking for the first time, then you will be able to restore to full factory state. This means all DRM keys intact, Bravia Engine working in Album and last but not least your warranty when needed :highfive:.
READ: At the bottom of this post is the FAQ. Here you will find answers on the most asked questions. Read them before posting any question in this thread. When you post a question which is already answered in the FAQ, I will ignore you and smile.
This tool only works under Windows. Mac and Linux will not be supported.
Downloads: https://github.com/DevShaft/Backup-TA/tags
Source: https://github.com/DevShaft/Backup-TA (release under MIT license)
FAQ
Q: Do I need root for this?
A: Yes, you do need root for this to work.
Q: Does it really work?
A: Really?
Q: Can I use someone else's backup?
A: No, this will hard-brick your device.
Q: Does it bring back my DRM keys etc. when I already unlocked my device?
A: Not without a backup of the TA before the initial unlock.