request for trim area ..... - Xperia Z4/Z3+ Q&A, Help & Troubleshooting

request for trim area ..... - Xperia Z4/Z3+ Q&A, Help & Troubleshooting

anyone has or can backu a trim area (ta) of a working phone??
thanx

Just to let you know you can't use someone else's ta you will hard brick your phone. And also you need root in order to back up your ta. And you can't root the z4 unless you unlock the bootloader. Meaning ta is gone

Related

Rooting Xperia Z then restoring back to COMPLETE original state

Hi all,
I have a stock Xperia Z at the moment. Its a work phone.
I want to root it but because its a work phone I have to know I can go back to complete original state if I want to.
Now I have read the threads about backin up your TA partition but I am not sure if by doing this and also by having a stock image I can go back to 100% original?
I read this thread: http://forum.xda-developers.com/showthread.php?t=2234627
Few questions:
- If I root the phone - does it do anything permanent or can I then just loose root easily and go back to exactly how it is now?
- What exactly is the difference between rooting your phone and unlocking your boot loader?
- If I backup the TA partition using the steps in the thread provided above, can I then just do anything else I want to the phone and then restore back to original or are there other steps? and if so, what are they.
Any and all up to date information from someone who knows what they are talking about hugely welcomed.
More nervous than usual just because its a work phone (rooted and used to Custom ROM my HTC Sensation all the time but didn't care as it was my own phone).
Thanks

No one?
Sent from my C6603 using Tapatalk 4 Beta

nnila said:
Hi all,
I have a stock Xperia Z at the moment. Its a work phone.
I want to root it but because its a work phone I have to know I can go back to complete original state if I want to.
Now I have read the threads about backin up your TA partition but I am not sure if by doing this and also by having a stock image I can go back to 100% original?
I read this thread: http://forum.xda-developers.com/showthread.php?t=2234627
Few questions:
- If I root the phone - does it do anything permanent or can I then just loose root easily and go back to exactly how it is now?
- What exactly is the difference between rooting your phone and unlocking your boot loader?
- If I backup the TA partition using the steps in the thread provided above, can I then just do anything else I want to the phone and then restore back to original or are there other steps? and if so, what are they.
Any and all up to date information from someone who knows what they are talking about hugely welcomed.
More nervous than usual just because its a work phone (rooted and used to Custom ROM my HTC Sensation all the time but didn't care as it was my own phone).
Thanks
Click to expand...
Click to collapse
1 - Rooting only changes things on the software side. So it allows you to get complete access to the system files and execute low level actions. So it doesn't do anything on the hardware side. That said, is your phone customized by your employer? Does it have anything specifically done to it? In that case two things might happen. The software is so customized that if you root it and flash a custom ROM on top of that, you WILL lose all the original apps and settings. So there might not be anyway of getting back to the original state. Secondly, your employer might have locked the bootloader permanently. This, I shall take up for answering your next question.
2 - As I mentioned, rooting is only a software level hack that gives unrestricted access. However, let's say you need to flash a custom KERNEL or flash CyanogenMod/AOKP/AOSP (based ROMS), then it's absolutely necessary to unlock your bootloader. This basically is telling the bootloader (which loads your kernel) to allow any unsigned kernels .i.e. non-stock kernels, to be flashed on to your phone. Now mind you, this will cause the DRM keys in your phone to be erased which means you will lose Bravia Engine enhancements for your Pictures. It does remain for the videos though. Lastly, you can relock your bootloader. But you can never get back the DRM keys and hence the Bravia Engine.
So you can either root by unlocking your bootloader or by using root exploits while keeping your bootloader locked.
3 - Since your bootloader is locked right now, I suggest you use DooMlord's rooting toolkit
Here's the link:
http://forum.xda-developers.com/showthread.php?t=2327472
Click to expand...
Click to collapse
Also, backing up the TA partition is only necessary if you want to unlock your bootloader. This aims at backing up your DRM keys so that you can flash them back when you want to relock your bootloader. However this method is still dicey and I wouldn't recommend it considering it is a very risky method and can easily hard brick your device.
Upshot: Locked bootloader - Use Rooting toolkit. Will retain DRM keys.
Unlocked bootloader - For custom Kernels and CM Roms. Will lose DRM keys.

nnila said:
Hi all,
I have a stock Xperia Z at the moment. Its a work phone.
I want to root it but because its a work phone I have to know I can go back to complete original state if I want to.
Now I have read the threads about backin up your TA partition but I am not sure if by doing this and also by having a stock image I can go back to 100% original?
I read this thread: http://forum.xda-developers.com/showthread.php?t=2234627
Few questions:
- If I root the phone - does it do anything permanent or can I then just loose root easily and go back to exactly how it is now?
- What exactly is the difference between rooting your phone and unlocking your boot loader?
- If I backup the TA partition using the steps in the thread provided above, can I then just do anything else I want to the phone and then restore back to original or are there other steps? and if so, what are they.
Any and all up to date information from someone who knows what they are talking about hugely welcomed.
More nervous than usual just because its a work phone (rooted and used to Custom ROM my HTC Sensation all the time but didn't care as it was my own phone).
Thanks
Click to expand...
Click to collapse
If you backup your TA partition, you can restore it later. This doesn't include anything other than the TA partition.
Rooting the phone just means that you have root access just like on any other linux distribution. You can fully unroot at anytime without any problems. Flashing an unrooted ROM or flashing the original ftf will remove root.
Rooting implies getting root access. You have higher privileges & apps that run as root have higher privileges. Unlocking the bootloader gives you access to protected partitions. The only real question is, do you want to use a custom kernel? - If you do, then unlock. Some ROMs, such as CM, run on custom kernels, so if you plan on using such ROMs, you need to unlock.
No, backing up TA is not enough, Follow this thread to get yourself a full ftf for your current customization that can be flashed with the official flashtool for Unlocked bootloaders or the unofficial flashtool that works with locked bootloaders. Further, you also need to relock your bootloader to fully return back to the original state.
If you aren't comfortable with doing all this, don't.
The next time you want to ask a quick question, please post in the Help Thread.
These questions are nothing new, already been answered multiple times, just adding to the clutter in the Q&A forum.

Bootloader unlock unlock wath can be disabled,etc...

Hi,everybody i'd like to make a info thread for who wants to unlock bootloaders.
We know we "loose" warranty,but someone did pay when phone had a hardware problem?
I backed up my TA partition so i can keep bravia engine.
Can we loose something else ?
I make that for me and others because i'm tired of crappy SONY frimwares x) and i want to officially unlock mine because i had no answers about kexec or unlock/bypass bootloader.
Thanks bro's

oualidbenadid said:
Hi,everybody i'd like to make a info thread for who wants to unlock bootloaders.
We know we "loose" warranty,but someone did pay when phone had a hardware problem?
I backed up my TA partition so i can keep bravia engine.
Can we loose something else ?
I make that for me and others because i'm tired of crappy SONY frimwares x) and i want to officially unlock mine because i had no answers about kexec or unlock/bypass bootloader.
Thanks bro's
Click to expand...
Click to collapse
I am very unsure about your post but if you want to officially unlock your bootloader then just do it, why the need for this thread?

[Q] Rooting/unlocking

So I've got myself a Sony Xperia Z1 and I'm a little unsure about how you root it.
From my understanding you need root to backup the DRM keys. but to get root apparently I need to unlock the bootloader to be able to put a certain version of the ROM on (which wipes the DRM keys).
Then I can root the phone.
Then I can backup the DRM keys
I'm seeing a loop here and I'm not sure what the first step would be. if anyone could point me in the right direction it would be heavily appreciated.

Hunter-Nyan said:
So I've got myself a Sony Xperia Z1 and I'm a little unsure about how you root it.
From my understanding you need root to backup the DRM keys. but to get root apparently I need to unlock the bootloader to be able to put a certain version of the ROM on (which wipes the DRM keys).
Then I can root the phone.
Then I can backup the DRM keys
I'm seeing a loop here and I'm not sure what the first step would be. if anyone could point me in the right direction it would be heavily appreciated.
Click to expand...
Click to collapse
You do not need to backup the TA area (Which contains the DRM keys) if you just want to root. you only need to do that if you unlock the bootloader.
First, read this about unlocking the bootloader
http://unlockbootloader.sonymobile.com/
If you can and you want to unlock the bootloader then do so, making sure you have backed up your TA
If you cant (And in any case you must do this in order to backup your TA) you must
1) Downgrade to 4.2
2) Root using Bin4rys method, google it
3) Install dual recovery for 4.2, Its in the development thread
4) Flash a prerooted 4.4 Rom, in the development section.
If you still want to unlock the bootloader, backup the TA

[Q] Unlocking?

I'm trying to figure out exactly what you lose when you unlock Z3(C).
So far I've discovered that:
- Sony has a webpage that allows you to unlock your device
- Unlocking your device will void your warranty
- Unlocking is the only known way to get root (at least right now)
- Unlocking your device will kill the "TA partition" that contains DRM keys
- Loss of the aforementioned DRM keys will cause some stuff to stop working
I found a huge thread on backing up TA partition for older xperia devices, but no good information RE: what exactly you lose if you wipe out the DRM keys by unlocking.
Do any of you know definitively: what the DRM keys are for and what you lose?
As an aside - it looks like backing up TA partition is only possible before you unlock bootloader and if you've rooted your phone (so probably not possible on Z3C until someone finds a working exploit to get root with a locked bootloader).
Thanks in advance for any insights.

I don't think there is a definitive place which says exactly what you lose by unlocking the boot loader but judging by what people having been saying after unlocking the Z3C and other Xperia phones on 4.4 it seems like the answer is nothing. Nothing is lost on the software side at all.

On the z1c I neglected to back up the TA partition. And apparently lost native mirror cast and some camera features when I rolled the device back to stock.
Back up your TA partition before unlocking BL... If not for the I'm tact features turn for your warranty!
http://forum.xda-developers.com/showthread.php?t=2292598
Those that have rushed into unlocking the BL without backing up the TA partition risk voiding warranty I'm afraid.

dillalade said:
On the z1c I neglected to back up the TA partition. And apparently lost native mirror cast and some camera features when I rolled the device back to stock.
Back up your TA partition before unlocking BL... If not for the I'm tact features turn for your warranty!
http://forum.xda-developers.com/showthread.php?t=2292598
Those that have rushed into unlocking the BL without backing up the TA partition risk voiding warranty I'm afraid.
Click to expand...
Click to collapse
Problem is, you need root to use those backup tools... So we would need a temp root exploit to backup before unlocking. But from what I've read so far, it doesn't seem like you lose that much, if anything.

I am also curious about this as I need root access but would like to preserve the warranty. Somebody else has also started a thread with what breaks with unlocking: http://forum.xda-developers.com/showthread.php?t=2890936

TiMiN8R said:
Problem is, you need root to use those backup tools... So we would need a temp root exploit to backup before unlocking. But from what I've read so far, it doesn't seem like you lose that much, if anything.
Click to expand...
Click to collapse
Most important consideration is your warranty such if your happy to lost it then unlock your BL.

dillalade said:
Most important consideration is your warranty such if your happy to lost it then unlock your BL.
Click to expand...
Click to collapse
It's not that definitive that you will lose warranty. Sony says it may void your warranty. Known issues with the specific model or batch, or other hardware problems that could not be caused by flashing custom ROMs/kernels will most likely still be covered.
http://www.phonearena.com/news/Sony...oader-unlock-tool-voids-your-warranty_id32972
I myself have sent in my Xperia T twice since unlocking the bootloader and on both occassions it was covered by the warranty.
Mind you, I did relock the bootloader and flash a stock FTF before doing that.
Flashtool has a function to relock the bootloader
http://www.digitalinternals.com/mobile/keeping-warranty-intact-sony-xperia-unlocked-phones/264/
I don't know if this works on our phone already, maybe someone who has already unlocked would like to try?

Temp root to backup DRM Keys (TA-Partition) now possible?

Is it possible to get temp root, by one of the security issues that got patched by the Mai or June Patch levels?
This would allow us to backup the TA Partition.
This would make it possible to flash it back, to "relock" the phone with a working camera, if we want back on stock, without any additional modifications.

There's already a thread for (discussing) that..
Just check there

mirhl said:
There's already a thread for (discussing) that..
Just check there
Click to expand...
Click to collapse
Thank you.
I know this thread, but the XZ2 does not have any 2017 firmware with 2017 cve's.

MartinX3 said:
Is it possible to get temp root, by one of the security issues that got patched by the Mai or June Patch levels?
This would allow us to backup the TA Partition.
This would make it possible to flash it back, to "relock" the phone with a working camera, if we want back on stock, without any additional modifications.
Click to expand...
Click to collapse
Siriously @MartinX3 ? big mouth about this by me: https://forum.xda-developers.com/xperia-xz2/help/oreo-curious-drm-fix-t3805944
now you post kind of the same -___#

Pandemic said:
Siriously @MartinX3 ? big mouth about this by me: https://forum.xda-developers.com/xperia-xz2/help/oreo-curious-drm-fix-t3805944
now you post kind of the same -___#
Click to expand...
Click to collapse
Again, please stop being childish, angry and impolite.
You mentioned a DRM fix, which needs a modified kernel and will work with custom ROMs.
There was already a conversation in the "what will happen when unlocking bootloader".
I want temporally root, with a hack and without unlocking the xz2, to backup the DRM partition, which allows me to relock the phone again.
Btw. You can't use the ta partition from another xz2, you need to make a backup of your own or it will brick the phone.
The unloking will erase the ta partition.

MartinX3 said:
Again, please stop being childish, angry and impolite.
You mentioned a DRM fix, which needs a modified kernel and will work with custom ROMs.
There was already a conversation in the "what will happen when unlocking bootloader".
I want temporally root, with a hack and without unlocking the xz2, to backup the DRM partition, which allows me to relock the phone again.
Btw. You can't use the ta partition from another xz2, you need to make a backup of your own or it will brick the phone.
The unloking will erase the ta partition.
Click to expand...
Click to collapse
I'm not being childish, angry or impolite and yes i know, i am not a noob or something like that how you react to me it looks i am being that
Thats not possible for a temporally root solution, i thought you inew that already and no ofcourse you can't another partition from another xz2 because it bricked indeed, i was also a flash junky so i know all that stuff.
Btw
I send you pm

https://atcommands.org/
Maybe we could achieve root and backup our DRM keys?

https://www.zdnet.com/article/security-flaw-lets-attackers-recover-private-keys-from-qualcomm-chips/
Security flaw lets attackers recover private keys from Qualcomm chips
Firmware patches have been released earlier this month, 46 Qualcomm chipsets impacted.

DRM keys might be included in that?

[XZ2/XZ2c/XZ2p/XZ3] temp root exploit via CVE-2020-0041 [android 10]
However it seems that restoring the TA partition after unlocking didn't work...

Does anyone know if there is progress in restoring the TA partition and get the phone in its original state?

Database Develop

welcome