Hi,
As you see i'm new to this community and i have 2 questions about backup ta program, link http://forum.xda-developers.com/showthread.php?t=2292598.
1º Question: Does it support Sony Xperia GO?
2º Question: Can i Update my mobile to jellybean and then do the backup of ta?
I need it because i don't want to void my warranty if i unlock the bootloader.
thanks,
Toxic21
toxic21 said:
Hi,
As you see i'm new to this community and i have 2 questions about backup ta program, link http://forum.xda-developers.com/showthread.php?t=2292598.
1º Question: Does it support Sony Xperia GO?
2º Question: Can i Update my mobile to jellybean and then do the backup of ta?
I need it because i don't want to void my warranty if i unlock the bootloader.
thanks,
Toxic21
Click to expand...
Click to collapse
1) Give it a try. Should work on all xperia devices.
2) Yes you can. Since xperia go got official jb update and you don't have to unlock your bootloader to install jb, there is no problem. You can backup keys with both ics and jb
3) If you unlock your bootloader you will void your warranty in any case. Backup ta partition will not make you loose bravia engine when after unlocking your bootloader you want to relock it. Won't save your warranty this mod
DaRk-L0rD said:
1) Give it a try. Should work on all xperia devices.
2) Yes you can. Since xperia go got official jb update and you don't have to unlock your bootloader to install jb, there is no problem. You can backup keys with both ics and jb
3) If you unlock your bootloader you will void your warranty in any case. Backup ta partition will not make you loose bravia engine when after unlocking your bootloader you want to relock it. Won't save your warranty this mod
Click to expand...
Click to collapse
Thanks for your reply you have cleared all my doubts but another question if i restore the ta partition and relock bootloader i have my warranty back correct?
It doesn't matter afaik restoring ta partition to get back your warranty (maybe I am wrong though). What really does matter is relocking the bootloader.
DaRk-L0rD said:
It doesn't matter afaik restoring ta partition to get back your warranty (maybe I am wrong though). What really does matter is relocking the bootloader.
Click to expand...
Click to collapse
You can be right(I'm the noob XD) but i have read if you not backup the ta partition your warranty is void. So relocking the bootloader is insuficient, you have to relock bootloader and restore the ta partition .
The tool creator said:"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 (including a locked bootloader). This means all DRM keys intact, Bravia Engine working in Album and last but not least your warranty when needed":good:
Font: http://forum.xda-developers.com/showthread.php?t=2292598
toxic21 said:
You can be right(I'm the noob XD) but i have read if you not backup the ta partition your warranty is void. So relocking the bootloader is insuficient.
The tool creator said:"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 (including a locked bootloader). This means all DRM keys intact, Bravia Engine working in Album and last but not least your warranty when needed"
Font: http://forum.xda-developers.com/showthread.php?t=2292598
Click to expand...
Click to collapse
I already read this thread mate, that's because I told you that I could be wrong.
Ok then, there is no reason for not trusting the tool creator. Just root and use this tool. Save and put keys in a safe folder and enjoy
DaRk-L0rD said:
I already read this thread mate, that's because I told you that I could be wrong.
Ok then, there is no reason for not trusting the tool creator. Just root and use this tool. Save and put keys in a safe folder and enjoy
Click to expand...
Click to collapse
Thanks dark for helping me, really apreciate it:good:.
best regards,
Toxic21
toxic21 said:
Thanks dark for helping me, really apreciate it:good:.
best regards,
Toxic21
Click to expand...
Click to collapse
You're welcome mate, it's a pleasure. For any further help let me know.
Hi,
I had the S3 and switched to the Z2 last month. So I am new to the bootloader thing.
Is it right that I can relock the BL by restoring the TA partition for warranty for example?
Or can Sony see that I've unlocked it?
just be sure to backup your TA, and you can go back to your original undetectable state
.....
Hi thx for your reply
So when I restore the TA the BL becomes locked again? Or is it possible without locking it?
And do I need a new backup when I update from .402 to .314 ?
House of Cards said:
Hi thx for your reply
So when I restore the TA the BL becomes locked again? Or is it possible without locking it?
And do I need a new backup when I update from .402 to .314 ?
Click to expand...
Click to collapse
Why do you need unlock at all? Exist root methods without unlocking...
When I want to install a custom kernel for example.
Restoring the Trim Area locks the bootloader.
mathieulh said:
Restoring the Trim Area locks the bootloader.
Click to expand...
Click to collapse
Does locking the BL wipes data the same as unlocking it?
Yeah m8, re-locking your bootloader will wipe your phone so, as always do a backup first:good:
When i originally unlocked the bootloader I had backed up my TA partition.
Now I have a question, can I restore my drm keys from it since im on another version of lollipop?
Sent from my D6503 using XDA Free mobile app
Drm keys are Android version independent. So the answer is yes, you can restore them.
However it's good to remember some rules before restoring; it will also relock your bootloader so, if you have unauthorized software inside your phone by Sony, like a recovery or a custom ROM, your phone will NOT boot as they are normally designed to work with unlocked bootloader.
You should do a backup before proceed or make sure you are on a nin-custom Sony firmware.
Sent from my D6503 using XDA Free mobile app
_delice_doluca_ said:
Drm keys are Android version independent. So the answer is yes, you can restore them.
However it's good to remember some rules before restoring; it will also relock your bootloader so, if you have unauthorized software inside your phone by Sony, like a recovery or a custom ROM, your phone will NOT boot as they are normally designed to work with unlocked bootloader.
You should do a backup before proceed or make sure you are on a nin-custom Sony firmware.
Sent from my D6503 using XDA Free mobile app
Click to expand...
Click to collapse
Excuse me I ment im on another version of Android*, From your answer I understood I cant restore that.. So what are my options for restoring them?
Sent from my D6503 using XDA Free mobile app
As I understand, the DRM keys are not reliant on your Android version. So keys from 4.4.4 should work on 5.0.2 as they shouldn't change. I'm pretty sure envious_data has confirmed this (please correct me if I'm wrong).
HOWEVER, restoring them will relock the bootloader. If you are on a non-sony custom ROM (so CM, AOSP, etc) the phone will not boot (eXistenZ, Moonwalker (I think), and other stock based ROM's will however).
Stock based ROM's will ONLY boot if you have a stock kernel (which is found inside of the ftf file), any custom kernel (advanced stock, AndroPlus, any CM/AOSP, any other stock based kernel) kernels will not.
A locked bootloader recovery will not prevent the phone from booting, as it is on the /system partition and not inside of a kernel.
Also, if you have a recovery installed to the FOTAKernel partition, restore that to stock as that will prevent the phone from booting. The stock FOTAKernel file can be found in the ftf file too. If needed I can strip an ftf file down to stock kernel and FOTAKernel to be flashed.
CosTuMe said:
Excuse me I ment im on another version of Android*, From your answer I understood I cant restore that.. So what are my options for restoring them?
Sent from my D6503 using XDA Free mobile app
Click to expand...
Click to collapse
You can restore your DRM keys on any android version but you must make sure you'r completely on a stock build. (No custom kernals)
Deleted.
whats the procedure for restoring them?
CosTuMe said:
whats the procedure for restoring them?
Click to expand...
Click to collapse
If you used the BackupTA tool (or whatever it is called, it's in the cross device section) use the restore function in that.
But before you do, make sure you are on a stock based ROM, with a full stock kernel and full stock FOTAKernel partition.
gamer649 said:
If you used the BackupTA tool (or whatever it is called, it's in the cross device section) use the restore function in that.
But before you do, make sure you are on a stock based ROM, with a full stock kernel and full stock FOTAKernel partition.
Click to expand...
Click to collapse
Ok, i had done it(and the phone boots). is there anyway to check i got them back?
CosTuMe said:
Ok, i had done it(and the phone boots). is there anyway to check i got them back?
Click to expand...
Click to collapse
Open the phone dialer, *#*#7378423#*#*, Service Tests, Security, and then look to each row. Each one will be followed by [KEY OK][ACTIVE].
Also, to check the bootloader is relocked.
Open the phone dialer, *#*#7378423#*#*, Service Info, Configuration, look to rooting status. It will say "Bootloader unlock allowed: Yes", instead of "Bootloader unlocked: Yes".
Thank you very much, I had succeeded restoring them
Sent from my D6503 using XDA Free mobile app
im currently on kitkat rom with full root and unlocked bootloader, and im planning to lock the bootloader. if i upgrade my phone to the latest official lolipop rom. can my phone lock the bootloader? can i get a new DRM key?
PS: i unlocked BL without backing the DRM keys so i lost it.
ulyshut said:
im currently on kitkat rom with full root and unlocked bootloader, and im planning to lock the bootloader. if i upgrade my phone to the latest official lolipop rom. can my phone lock the bootloader? can i get a new DRM key?
PS: i unlocked BL without backing the DRM keys so i lost it.
Click to expand...
Click to collapse
You can re-lock the bootloader without the DRM keys, however it will not restore them. You can use the bootloader unlock/re-lock function in flashtool to lock the bootloader again.
You can lock the bootloader on any android version, regardless of what version you unlocked it on. But if you didn't back up your DRM keys there is no way to get them back, they are lost forever unfortunately.
thanks for the reply, because my remote play access did not work when i rooted my phone . now based on the other thread, its about the DRM key and unlock BL that is causing the issue.
Steps to restore DRM keys?
Hey,
I want to just request some help about the DRM keys. I know more or less what to do since I have lost them in order to get root. As I have understood the steps go:
Backup all apps and whatnot
Flash stock ftf file from any version (wipe APPSLOG, CACHE, DATA) via Flashtool
Root using Easy Root Tool
Backup TA partition using this tool
Push dual recovery into phone using NUTs Dual Recovery script
Restore TA partition using the tool above
And hopefully I would have Root with working keys? I am currently getting the 17.1.2.A.0.314 & 17.1.1.A.0.402 ftf firmware. If I am missing anything from the steps above please inform me.
Thanks ^^
.
suenoromis said:
Hey,
I want to just request some help about the DRM keys. I know more or less what to do since I have lost them in order to get root. As I have understood the steps go:
Backup all apps and whatnot
Flash stock ftf file from any version (wipe APPSLOG, CACHE, DATA) via Flashtool
Root using Easy Root Tool
Backup TA partition using this tool
Push dual recovery into phone using NUTs Dual Recovery script
Restore TA partition using the tool above
And hopefully I would have Root with working keys? I am currently getting the 17.1.2.A.0.314 & 17.1.1.A.0.402 ftf firmware. If I am missing anything from the steps above please inform me.
Thanks ^^
Click to expand...
Click to collapse
If you unlocked your BL before making backup of TA your keys are lost FOREVER .
Even if you downgrade and start everything again you won't get the keys back as they were unique to your device. If you don't have a TA backup of your keys don't waste time downgrading...
But if you DO HAVE A WORKING TA backup with YOUR keys then downgrade to 4.4.2, root, restore your TA (BL will get locked in the process), install dual recovery and upgrade to a pre-rooted firmware. You'll still have your keys and BL locked.
Steps to restore DRM keys?
ptmaniac said:
If you unlocked your BL before making backup of TA ..... You'll still have your keys and BL locked.
Click to expand...
Click to collapse
So there's absolutely no way to get the keys back after unlocking the bootloader?
What about this?
_delice_doluca_ said:
Drm keys are Android version independent. So the answer is yes, you can restore them.
However it's good to remember some rules before restoring; it will also relock your bootloader so, if you have unauthorized software inside your phone by Sony, like a recovery or a custom ROM, your phone will NOT boot as they are normally designed to work with unlocked bootloader.
You should do a backup before proceed or make sure you are on a nin-custom Sony firmware.
Click to expand...
Click to collapse
suenoromis said:
So there's absolutely no way to get the keys back after unlocking the bootloader?
What about this?
Click to expand...
Click to collapse
Confused about what? you are overcomplicating things.
You can get your keys back ONLY if you have a backup of your TA BEFORE unlocking your bootloader.
DID YOU BACKUP YOUR TA BEFORE UNLOCKING YOUR BOOTLOADER?
If you answer YES --> you can restore your keys
If you answer NO --> they are lost forever.
SImple.
suenoromis said:
So there's absolutely no way to get the keys back after unlocking the bootloader?
What about this?
Click to expand...
Click to collapse
Sorry, If I got things complicated. Let me explain it in scenerios and steps;
Small İnfo first; there is a small partition (or a small and untouchable part inside of a partition) in our phones. It contains and "device-specific" keys, basically an ID.
Some Sony-made softwares (like a picture or sound enhancer which are activated when user starts a music or takes a picture) are patent protected and search for these keys before run. If keys are not there user still can take a picture or listen to music however the patented enhancing software will not kick in. So how do you lose the keys? Why is Sony making this?
Because they want to protect their patented technology from being exposed to inspections or non-Sony users. So basically they tell you if you "unlock your bootloader" you will be able to do anything with your phone freely but the keys-including-partition will be wiped forever and those patented software addings will not run.
Let's get to scenerios.
1th Scenerio: You want to install custom kernel, recovery or ROM to your device? You have to unlock bootloader and it is simple. But doing this basically will wipe your keys and they will be gone forever.
2nd Scenerio: The device can be rooted without unlocking its recovery (very clever Sony, you think about protecting your patent and invent the "keys partition" and lock them to bootloader and get rooted that easily). Once we obtain root, we can read and write to any partition, including the one with the keys (it is called Trim Area). Once we are rooted, with FlashTool, we can backup the TA partition and protect the keys on our PCs.
"After the backing up", once we unlock the bootloader the phone will wipe TA partition but we will have a backup of them on our PCs.
With that backup on our PCs, we can safely do whatever we want; install custom ROMS, kernels, recoveries etc. (actually, there is even a recovery installation possible with "locked bootloader" ) and once we need to claim our warranty or want Sony-patented software enhancements, we can simply restore the TA partition (again with FlashTool).
E2303, 8GB. Phone image was downgraded temporarily to root with xperiarootkit & backup TA. Latest stock image (with carrier branding due to connectivity issues without it) was (re-)installed afterwards, bootloader unlocked, TWRP installed & phone re-rooted. TA was then restored. SIM card is perma-locked to carrier. ( )
Phone is rooted, TWRP works, bootloader status is still unlocked (???), TA partition exists, but DRM features like ClearAudio+ etc. are missing from the settings. Anyone have any idea what's going/how this can be fixed? Does Backup TA not restore correctly (or worse, backup incorrectly!!! This would be VERY bad!) on the M4 Aqua?
I unlocked without backing up drm Keys and i have normally working phone with Clear Audio+...
What next features dont working u?
Normally you have to re-lock your bootloader for those DRM-related features to work again. At least that's how it was on my Xperia SP.
Can anyone tell me all DRM features on this device please?
Th3B1ff said:
Normally you have to re-lock your bootloader for those DRM-related features to work again. At least that's how it was on my Xperia SP.
Click to expand...
Click to collapse
That's the thing tho: TA Backup didn't relock the bootloader.
AforAnonymous said:
That's the thing tho: TA Backup didn't relock the bootloader.
Click to expand...
Click to collapse
if you did a TA backup when the Bootloader was locked and if you use the TA Backup tool to restore it, it will lock the bootloader again.
thats how it worked for me on my Xperia z and now Xperia M4 (E2363)
How did you backup and how did you restore? The restore perhaps didn't work because the TA partition has to be set to writable (via blockdev command).
This is just a guess. I didn't unlock yet but did a backup of TA (manually, not using some batch files because I don't trust them and I run Linux and Win batch files won't work).
AforAnonymous said:
That's the thing tho: TA Backup didn't relock the bootloader.
Click to expand...
Click to collapse
My apologies for being a month late with this.
Flashtool provided the option to re-lock your bootloader. So, once you've restored your TA backup you can then use flashtool to re-lock.
Hope this was useful. :fingers-crossed:
Cheers,
Re-locking using flash tool only locks the bootloader but does not restore the DRM certificates.
after re-locking with flashtool you can use PCC to repair the phone and get OTA updates, but the DRM certificates are not restored, they are lost for good.
unless you have used TA Backup (http://forum.xda-developers.com/showthread.php?t=2292598) to backup the TA partition when the bootloader was locked and the certificates were all ok and valid, you need root with locked BL for this to work.
Restoring the TA partition with TA Backup tool, locks and restores the drm certs again root is required for TA restore.
i know because mine worked.