Xperia XZ2 compact how to backup TA partition (DRM keys)? - Sony Xperia XZ2 Compact Questions & Answers

Hello, before unlocking the bootloader I would feel better if I had a backup of the TA partition. Just in case - I know that there is no way to restore it yet. Can anyone please show me a link to noob-friendly instructions how to backup the TA partition?
What I found out so far:
1. Downgrade to an exploitable version of stock FW
2. execute exploit binary
3. backup TA
Point 1 is clear to me but I would need instructions how to do 2 and 3.

This guide by Andres Gomez is what I have used to backup DRM keys in the TA partition on a couple of XZ2c H8324 phones. Dunno how to restore a TA partition though. https://blog.andresgomez.org/2020/0...u-linux-1-5-downgrading-sonys-stock-firmware/

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Create EFS Backup Tab 3 8inch

Is theere any tutorial or way to perform this?
If you've got a Custom Recovery (CWM, TWRP etc.) you can backup the EFS partition that way or use this application - http://forum.xda-developers.com/showthread.php?t=1308546

[Q] alternative way to make backup EFS (not EFS Pro)

Hi,
i try make backup may EFS partition AT&T Stock ICS (phone rooted, busybox installed). When i try EFS Professional v2.0 i stil have information "unable read PIT file". I make backup with GalaxSim Unlock 1.02. Now i have 3 files (down below). Do this is good EFS backup files?
Do i can from this files restore my EFS partition (IMEI etc.). If yes, what i must to do?
greetings
kamykkamyk_pl said:
Hi,
i try make backup may EFS partition AT&T Stock ICS (phone rooted, busybox installed). When i try EFS Professional v2.0 i stil have information "unable read PIT file". I make backup with GalaxSim Unlock 1.02. Now i have 3 files (down below). Do this is good EFS backup files?
Do i can from this files restore my EFS partition (IMEI etc.). If yes, what i must to do?
greetings
Click to expand...
Click to collapse
Use this version of EFS pro, newer versions don't play nicely with our phones
If you make a standard nandroid backup, but skip the data backup, you can restore your EFS anytime.
Sent from my SGH-I927 using Tapatalk
kamykkamyk_pl said:
Hi,
i try make backup may EFS partition AT&T Stock ICS (phone rooted, busybox installed). When i try EFS Professional v2.0 i stil have information "unable read PIT file". I make backup with GalaxSim Unlock 1.02. Now i have 3 files (down below). Do this is good EFS backup files?
Do i can from this files restore my EFS partition (IMEI etc.). If yes, what i must to do?
greetings
Click to expand...
Click to collapse
Hi,
Of course you can use GalaxSim Unlock to restore your EFS backup. The backups made by other tools for this device will contaion the same data. By default, it will restore the EFS folder. If you check "advanced mode" in settings, you can chose to restore the whole partition.
Unfortunately, I've had a look at your data : you seem to have lost your stock EFS data (I suppose you IMEI might be wrong). Unfortunately if you don't have a backup made before you lost it, you can't do much to restore your imei.
spocky12 said:
Hi,
Of course you can use GalaxSim Unlock to restore your EFS backup. The backups made by other tools for this device will contaion the same data. By default, it will restore the EFS folder. If you check "advanced mode" in settings, you can chose to restore the whole partition.
Unfortunately, I've had a look at your data : you seem to have lost your stock EFS data (I suppose you IMEI might be wrong). Unfortunately if you don't have a backup made before you lost it, you can't do much to restore your imei.
Click to expand...
Click to collapse
Hello,
i buy my I927 from Singapure in september 2013, they have original Stock 4.0.4 ROM and was unlocked. After buying i root device and now (3 days ago) i flash Omni Rom 4.4 (KiteKat). I backup my EFS partition before i falsh OMNI Rom, also my backup ist from original stock AT&T 4.0.4 ROM

Need ta backup for other purpose

Hi all
Please upload ur TA BACKUP PARTITION PLEASE I WON'T do something crazy just need it for some other purpose
And i will not restore your ta to my device just need it for some other purpose
PLEASE READE ABOVE AND DON'T WARN ME PLEASE JUST UPLOAD IT TO MEDIAFIRE IF POSSIBLE

How to backup TA for E5663 / 30.2.B.0.100?

Hi how do I backup my TA for E5663 / 30.0.B.1.23 ?
Here you can find the method to backup your TA and restore it too,

Backup System to a new device with TWRP Recovery

Hey guys,
is it possible to backup my rom witg twrp to another but similar device? From z1c to z1c.
best, dj
Yes, this is possible and it works OK. I have done this many times.
Just make ABSOLUTELY SURE NOT TO restore the "TA partition" from one device to another! This partition contains device specific code. If you clone the TA to another device, it will not boot. The only way to recover would be if you have a TA backup of the messed device (and you will have to access its internals).
So to summarize: You can share ROM backups through multiple devices. Always do a full backup BEFORE you restore another one. Never restore TA partition from another device.
Thanks. Btw, if you share a micro sd card wirh multiple devices twrp generates device speccific folders. You can access only files from your "own" folder.

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