Backing up encryption keys. - Xperia Z3 Tablet Compact Q&A, Help & Troubleshooti

I have managed to root my Tablet Z3C (downgraded to official 4.4 ROM using Flashtool, rooted using Kingroot, and loaded DualRecovery from PC using ADB interface)..
I am about to flash a 5.11 ROM, but at some point I also want to backup my DRM keys (my bootloader is unlockable, but I dont' really need to now).
Is it as simple as just backing up the Trim Area partition using TWRP?
I have searched for a thread, but never found anything that says this. Is TA == TRIM AREA == DRM Keys?

The more secure way is to backup it via TA Backup tool for Windows. It's safe and easy to restore.
http://forum.xda-developers.com/showthread.php?t=2292598
You know, unlocking bootloader wipes internal storage and it's possible you'll loose your DRM backup.
Use TA backup I linked and remember to upload backup to cloud (I have my backup on 3 clouds - google drive, mega, dropbox).

Many thanks. With this backed up, can I unlock the bootloader, relock and restore the TA DRM easilly and restore my tablet to original condition if need be?

Related

Some questions: Nandroid and Rooting

Ok a few basic questions if someone would be so kind! :
- Can Nandroid and more specifically creating a backup image of the phone only be done *after* rooting?
- Would any backup image therefore include the rooted "state" of the phone if reapplied?
- By rooting the phone does the warranty through Orange become invalid?
Ta,
~ Temjin
1. No, it can be done before.
2. Yes reapplying a rooted image will get you root
3. Don't know!
Hi Kadison,
In which case would you be so kind as to tell me how to create a backup image without rooting / point me in the right direction for more information please?
Thanks!
Go to Modaco's site, follow the instructions to the letter and you'll then be able to boot your phone into the recovery image, and perform a nandroid backup.
The backup will be stored on your SD card and can be moved to your PC.
Awesome, thanks
Hi another question from a different newbie. If I back up using Nandroid, apply another ROM (with wipe), does Nandroid then let me restore all my apps or will it restore the whole previous ROM?
Ta
martint235 said:
Hi another question from a different newbie. If I back up using Nandroid, apply another ROM (with wipe), does Nandroid then let me restore all my apps or will it restore the whole previous ROM?
Ta
Click to expand...
Click to collapse
My understanding is Nandroid will restore whatever ROM it was used to generate a backup.
Thanks for that. Another noobie question though, what happens to apps I've bought etc if I flash a new ROM?
Thanks

[Q] [Sola] Backup GB data without root?

Did my searches, the closest answer requires an unlocked bootloader. Ok, here is the situation:
Aim: I want to backup GB without losing my apps + data.
Root: No
Bootloader: Locked
Will this work?
1. Update GB to ICS (assuming it doesn't upgrade my apps to some ICS-compatible version)
2. Root ICS without losing data.
3. Backup data with Titanium Backup (again, hopefully ICS doesn't change my apps + data)
4. Unlock my bootloader (yes, it'll wipe my data)
5. Flash GB using flashtool
6. Restore app+data using Titanium Backup
7. Install CWM
8. Do a nandroid backup
Thanks XDA
I guessed nobody had a clue on this matter, so I experimented and failed miserably.
1. I updated from GB to ICS
2. Rooted
3. Backed up with Titanium
4. Unlocked the bootloader
5. Flashed pulak's Fluidity ROM to get a sense of its speed
6. Loaded titanium backup and backups are MISSING!
I lost my backups because Titanium backed up to /mnt/sdcard which was later wiped by bootloader unlocking process
Use the method to root gb
Thats simple
Now since u have a rooted gb
Install cwm and make a nandroid backup
Is that so difficult??
Its not like that u can do everything widout rooting
We root our androids for a purpose and one among this is what u r asking for
drsanket_xperia_u said:
Use the method to root gb
Thats simple
Now since u have a rooted gb
Install cwm and make a nandroid backup
Is that so difficult??
Its not like that u can do everything widout rooting
We root our androids for a purpose and one among this is what u r asking for
Click to expand...
Click to collapse
It's either I'm an idiot or you are..
You can't root GB Sola without unlocking the boot loader..
Prove me wrong..
Sent from my MT27i using xda app-developers app

Backing up the TA partition needed?

Saw Backup TA v9.11 for Windows but I don't use windows nor can I download anything from Github from their page. How needed is this? Is there any way else of backing up these files if they are that important?
dvdivx said:
Saw Backup TA v9.11 for Windows but I don't use windows nor can I download anything from Github from their page. How needed is this? Is there any way else of backing up these files if they are that important?
Click to expand...
Click to collapse
If you ever need to get a Xperia serviced under warranty then you will probably want to restore the TA, or if you want to ever use Sony's DRM locked apps
So how do I back up the TA partion in an unrooted phone? Also none of the root tools work in linux.
dvdivx said:
So how do I back up the TA partion in an unrooted phone? Also none of the root tools work in linux.
Click to expand...
Click to collapse
You cant back it up on an unrooted phone
[NUT]'s dual recovery has a linux installer I think, and that has the towelroot/easyroot method built in I think

Asking for working not corrupted TA files for E2306

Just like tittle says, my TA area for my model has gone corrupted and i need to restore dont worry about other stuff i just need the full TA area from another E2306, the security keys (the stuff which is different from phone to phone) are backed up which i will restore it after i restore the TA so it wont brick
thanks if somebody can upload those files

Root & Backup TA Partition

I'm looking into rooting my Z3 tablet and I want to save my TA partition.
I found the TA backup app, but it requires a rooted Z3. However, when you root the Z3 you looks the TA partition. Catch 22?
What to do?
Look here: https://forum.xda-developers.com/crossdevice-dev/sony/universal-dirtycow-based-ta-backup-t3514236

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