Database Develop

[Q] Unlock bootloader wipes all data ?

Hello.
Im abit new to the forum but here goes.
Ive read tons of posts everywhere and there aint any exact answers anywhere to find.
In the past ive never known about the TA and DRM so happy as i am i just unlocked the bootloader on all the phones and still happy. The latest phone is the Xperia Z1. It has been abit buggy to say the least but im hoping software updates will cure this.
Anyway, i rooted my phone and unlocked the bootloader on the .681 firmware and now i am on .757 firmware. Using Doomlords kernel. I thought id check if i could backup my TA partition after unlocking the bootloader. And from what ive read its suppose to be wiped when you unlock the bootloader.
Well it was no problem backing up the TA partion. All files were there and it came out with no errors. So the question, how is this possible ?
I posted this same thing in General, sorry for that but i posted it here now so if a moderator finds this post in general then please delete it.
/Jonas740

If you Unlocked your Bootloader without Backup TA (DRM keys) first, then your DRM Keys are lost forever and you can Backup TA how much you want but there is no DRM Keys at all. The application to Backup TA do not give errors because you can backup partitions with or without DRM Keys, in the case you want switch between Locked and Unlocked Bootloader.
So long story short, you don't have DRM Keys, your warranty is lost forever, you cannot Update via OTA,PC Companion or SUS.

eclyptos said:
If you Unlocked your Bootloader without Backup TA (DRM keys) first, then your DRM Keys are lost forever and you can Backup TA how much you want but there is no DRM Keys at all. The application to Backup TA do not give errors because you can backup partitions with or without DRM Keys, in the case you want switch between Locked and Unlocked Bootloader.
So long story short, you don't have DRM Keys, your warranty is lost forever, you cannot Update via OTA,PC Companion or SUS.
Click to expand...
Click to collapse
The one time I had to use my warranty there was no problem with missing TA.
So there is hope for people without it
Sent from my C6903 using XDA Premium 4 mobile app

well.
HellRoot said:
The one time I had to use my warranty there was no problem with missing TA.
So there is hope for people without it
Sent from my C6903 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
dunno if the previous author saw what i wrote in my post but when i relocked my Xperia V using flashtool i could update with the pc companion or sony update or whats it called nowdays
And funny thing is, i actually have a case at Sony about this phone since i do have some issues with it but i think thats software related since ppl have been getting all sorts of errors from the KitKat firmwares. But i said how it was that i have unlocked bootloader and all that and she replied that my warranty was still valid and i could send it in for them to test it.
And i need to say this. Since sony posts an official way on their webpage, for ANYONE to read about how to unlock the bootloader and they also supply the code for unlocking it. Then i think it shouldnt affect the phone in any way or brake the warranty. (Sure it does say something about that, but all aint reading stuff like that). So if a developer wanted to unlock the phone. Why not have them contacting sony instead.
And surley, DRM keys (i just think sony shouldnt even bother having them) can be put back in if you let Sony do it. They put it there in the first place you know. And in the lovely electronic world we live in we all know that, if Sony can put thoose there, anyone could do it with the knowhow. But since the keys dont really mean anything, not that ive noticed you could really think about what use they actually do. And Sony knows that if ppl cant have the phone it was meant to be even with a unlocked bootloader, they will probably get some other phone or just whine hard enough so that Sony makes a software where everything works the same way with locked or unlocked. Camera stopped to work if you unlocked before 4.3 right ? What can you read about that like everywhere ? Loads of whining and Sony released a software that works just as good with locked or unlocked.
God damn this became a long post. So with this said im just saying. Why even bother in the first place having DRM keys if the rules dont apply anyway ? An everyday user doesent even need them either, he or she doesent even know what rooting or unlocking is anyway. And the ones that do know about it, also know about how to whine to get sony to fix the errors wich an unlock will produce

Jonas740 said:
dunno if the previous author saw what i wrote in my post but when i relocked my Xperia V using flashtool i could update with the pc companion or sony update or whats it called nowdays
And funny thing is, i actually have a case at Sony about this phone since i do have some issues with it but i think thats software related since ppl have been getting all sorts of errors from the KitKat firmwares. But i said how it was that i have unlocked bootloader and all that and she replied that my warranty was still valid and i could send it in for them to test it.
And i need to say this. Since sony posts an official way on their webpage, for ANYONE to read about how to unlock the bootloader and they also supply the code for unlocking it. Then i think it shouldnt affect the phone in any way or brake the warranty. (Sure it does say something about that, but all aint reading stuff like that). So if a developer wanted to unlock the phone. Why not have them contacting sony instead.
And surley, DRM keys (i just think sony shouldnt even bother having them) can be put back in if you let Sony do it. They put it there in the first place you know. And in the lovely electronic world we live in we all know that, if Sony can put thoose there, anyone could do it with the knowhow. But since the keys dont really mean anything, not that ive noticed you could really think about what use they actually do. And Sony knows that if ppl cant have the phone it was meant to be even with a unlocked bootloader, they will probably get some other phone or just whine hard enough so that Sony makes a software where everything works the same way with locked or unlocked. Camera stopped to work if you unlocked before 4.3 right ? What can you read about that like everywhere ? Loads of whining and Sony released a software that works just as good with locked or unlocked.
God damn this became a long post. So with this said im just saying. Why even bother in the first place having DRM keys if the rules dont apply anyway ? An everyday user doesent even need them either, he or she doesent even know what rooting or unlocking is anyway. And the ones that do know about it, also know about how to whine to get sony to fix the errors wich an unlock will produce
Click to expand...
Click to collapse
closed for being a duplicate.
use this link for other thread.
http://forum.xda-developers.com/showthread.php?t=2730169

[Q] DRM Restore by Sony?

HI Guys,
After an interesting day , getting to grips with my Xperia Z , I'm now left wondering about my missing DRM Certificates.
Have anyone successfully managed to get Sony to restore their files by means of an out of warranty repair?
Obviously by unlocking the boot loader we confirm that we are foregoing our warranty coverage , but I would have thought that Sony would have the original DRM Keys on a server somewhere?
Any thoughts , experiences or advice would be great.
Also what does NOT having DRM Keys prevent you from doing on the Experia Z ? , Reading the Sony FAQ it would seem that it stops high end devices like the Z3 from using image enhancement algorithms , but how does it effect the Z ?
Many thanks guys , for a warm welcome to this board , it's a great place to be.
Sixx :laugh:

I've never heard of anybody getting Sony to restore DRM keys to their device. They normally refuse to touch anything caused by unlocking the bootloader, even if you offer to pay. Also, it's not as simple as Sony pulling them from a server and copying them to your phone, as they're specific to your particular device and stored on an encrypted partition (the TA partition).
On the Xperia Z, loss of the DRM keys stops Bravia Engine 2 working, as well as screen mirroring. As far as I know, that's it. Someone correct me if I forgot something else that's affected.
Sent from my C6603 using Tapatalk

Ahhhh I see , oh well no huge loss then.
It's a shame that they don't enable DRM restoration , as they give the option to unlock the boot loader
Thanks for the reply.
Sixx

sixxdog_uk said:
Ahhhh I see , oh well no huge loss then.
It's a shame that they don't enable DRM restoration , as they give the option to unlock the boot loader
Thanks for the reply.
Sixx
Click to expand...
Click to collapse
You're welcome. Happy to help.
I'm not sure why they have the system of erasing DRM keys when unlocking the bootloader. On one hand they boast of being open by officially offering unlock keys (and it's great that they do!) but on the other hand they then remove functionality permanently if you take advantage of that openness. Confusing to say the least!
Sent from my C6603 using Tapatalk

DRM how to check?
Well this is interesting...............
Earlier today before I repaired and stock ROM flashed my Xperia Z I had one set of Certificates which was for Live Application.
Now after refreshing and locking the boot loader then reloading the latest ROM including 4.4.4 Android I have 4 Sets , Application , Platform , Shared & Media ??
Now I might be grasping at straws , but could this mean that my MEDIA DRM has been restored in some way? or maybe it was never gone?
Is there a simple test to check if DRM is still present?
I doubt it is , but as i have no idea about what was done to the phone before I bought it , maybe just maybe the DRM is still there?
Hope this isn't something that has been covered already , but i doubt there is anything really new
Cheers,
Sixx
(Note: Bravia Engine 2 & Screen Mirroring both seem to be working.)

You can check your DRM keys by following this procedure -
Enter *#*#7378423#*#* in the dialler.
Select "Service tests".
Select "Security".
If any keys have an error, then they're lost.
Sent from my C6603 using Tapatalk

Test Results
kingvortex said:
You can check your DRM keys by following this procedure -
Enter *#*#7378423#*#* in the dialler.
Select "Service tests".
Select "Security".
If any keys have an error, then they're lost.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
Ok so i tested the security keys and got this.....
MARLIN [Unknown Error][Active]
WMLA [Unknown Error][Active]
HUK : xxxxxxxxxxxxxxxx [Key OK][Active]
PRODID_AID : 0001 [Key OK][Active]
OTP_LOCK_CONFIG : xxxxxxxxxxx[Key OK][Active]
OTP_LOCK_STATUS : xxxxxxxxxx[Key OK][Active]
AUTH_ENABLE : 01 [Key OK][Active]
DEVICE_ID : xxxxxxxxxxx[Key OK][Active]
So I'm guessing the top two are the result of the missing DRM? , But what are the others? anything interesting?
Cheers,
Sixx

Yes, the Marlin and WMLA keys are what's erased when unlocking the bootloader.
As for the other keys, I don't know what they're for, to be honest.
Sent from my C6603 using Tapatalk

Thanks
kingvortex said:
Yes, the Marlin and WMLA keys are what's erased when unlocking the bootloader.
As for the other keys, I don't know what they're for, to be honest.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
Ok thats that then , thanks for the advice.
Sixx

You're welcome.
Sent from my C6603 using Tapatalk

[Q] Help: Problem constant Restart

Hello friends, I hope you can help me on this, I'm Venezuelan so I translated this into google, I have an Xperia ZR, the problem is that it does not accept the firmware that put him just begins to reiniciciarse again and again, the one who accepts is the version 4.1.2 but it does not work the phone nor WiFI, also recognizes the Sim Card and placed in the nuemérico keypad * # 06 # not show the IMEI. There will be some solution for this? Is Xperia ZR C5502, they hope can help me.

Eduardo3107 said:
Hello friends, I hope you can help me on this, I'm Venezuelan so I translated this into google, I have an Xperia ZR, the problem is that it does not accept the firmware that put him just begins to reiniciciarse again and again, the one who accepts is the version 4.1.2 but it does not work the phone nor WiFI, also recognizes the Sim Card and placed in the nuemérico keypad * # 06 # not show the IMEI. There will be some solution for this? Is Xperia ZR C5502, they hope can help me.
Click to expand...
Click to collapse
Have you tried repairing your ZR using Sony PC companion? Have you unlocked bootloadter by official or unofficial method without backing up DRM keys and TA partitions?

sourabhp said:
Have you tried repairing your ZR using Sony PC companion? Have you unlocked bootloadter by official or unofficial method without backing up DRM keys and TA partitions?
Click to expand...
Click to collapse
Hello friend, sorry for the time to respond, never try to unlock your bootloader and you try to repair the PC Companion, there will be some form of recueperar my IMEI and thus fix my Xperia ZR ?? Or some way to repair the TA carpetetas? I hope you can help me

Eduardo3107 said:
Hello friend, sorry for the time to respond, never try to unlock your bootloader and you try to repair the PC Companion, there will be some form of recueperar my IMEI and thus fix my Xperia ZR ?? Or some way to repair the TA carpetetas? I hope you can help me
Click to expand...
Click to collapse
I am not able to understand the words like carpetetas or recueperar? you can take your phone to local service center and ask them to see what is wrong. First take backup of your phone like contacts, sms whatsapp data etc. then visit service center. If everything is okay ( DRM Keys and TA partitions ) they will flash latest 4.4.4

If yiu didnvt unlocked the bootloader then try to install arom for ur region but if u unblocked bootloader i think you have lost ta partition so the imei doesn't show up when u call *06#

I think so too. May be you have unlocked bootloader without backing up TA partition and DRM keys thats why you are not able to upgrade your phone to version 4.3 or 4.4.2 or 4.4.4.
There was same question some time back. Someone unlocked bootloader without backing up and now stuck on 4.1.2. Sony refused to help as he lost warranty of the phone by unlocking. He had no knowledge about unlocking and warranty.

sourabhp said:
I think so too. May be you have unlocked bootloader without backing up TA partition and DRM keys thats why you are not able to upgrade your phone to version 4.3 or 4.4.2 or 4.4.4.
There was same question some time back. Someone unlocked bootloader without backing up and now stuck on 4.1.2. Sony refused to help as he lost warranty of the phone by unlocking. He had no knowledge about unlocking and warranty.
Click to expand...
Click to collapse
Greetings from new friend, well I got the phone when using it a while and I andubo pretty well until I skip the update to Android 4.2.2 and in doing so by PC Companion problems began not recnocia the operator sim card and alli what flashee with flashtools but not the phone began to reboot every time. Now the phone will not funcionala network sim card is not detected, does not turn on WiFi, no funcioan the Bluetooth, does not display the IMEI and also in Settings-About Phone, Says Baseband Version Unknown. It will be a logic board problem ???, I substitute another ???

Eduardo3107 said:
Greetings from new friend, well I got the phone when using it a while and I andubo pretty well until I skip the update to Android 4.2.2 and in doing so by PC Companion problems began not recnocia the operator sim card and alli what flashee with flashtools but not the phone began to reboot every time. Now the phone will not funcionala network sim card is not detected, does not turn on WiFi, no funcioan the Bluetooth, does not display the IMEI and also in Settings-About Phone, Says Baseband Version Unknown. It will be a logic board problem ???, I substitute another ???
Click to expand...
Click to collapse
Frankly speaking, I do not understand non-English words that frequently appears in your posts. Having that said, I can pretty much grasp the gist from your posts, although that may not be 100% what you intend to mean. Combined with answers by previous forum members, i offer you suggestions to your problems point by point.
Okay enough of this bull****. First I want to say that if you are unfamiliar with things here on XDA, read the guidelines before you do anything. You probably unlocked the bootloader of your phone, but did not backup anything. In that case, you HAVE to install a kernel everytime you try to switch rom (including a stock-based, or stock for that matter). Your numerous problems above suggests a kernel problem to me. What you do now is to follow UB way to flash a AOSP or whatever rom (not stock) and report if it solved your problems

paulson881 said:
Frankly speaking, I do not understand non-English words that frequently appears in your posts. Having that said, I can pretty much grasp the gist from your posts, although that may not be 100% what you intend to mean. Combined with answers by previous forum members, i offer you suggestions to your problems point by point.
Okay enough of this bull****. First I want to say that if you are unfamiliar with things here on XDA, read the guidelines before you do anything. You probably unlocked the bootloader of your phone, but did not backup anything. In that case, you HAVE to install a kernel every time you try to switch rom (including a stock-based, or stock for that matter). Your numerous problems above suggests a kernel problem to me. What you do now is to follow UB way to flash a AOSP or whatever rom (not stock) and report if it solved your problems
Click to expand...
Click to collapse
He is using google translate to convert his question for us to understand. but google is getting better of him by throwing such smart n hard words at him.

paulson881 said:
Frankly speaking, I do not understand non-English words that frequently appears in your posts. Having that said, I can pretty much grasp the gist from your posts, although that may not be 100% what you intend to mean. Combined with answers by previous forum members, i offer you suggestions to your problems point by point.
Okay enough of this bull****. First I want to say that if you are unfamiliar with things here on XDA, read the guidelines before you do anything. You probably unlocked the bootloader of your phone, but did not backup anything. In that case, you HAVE to install a kernel everytime you try to switch rom (including a stock-based, or stock for that matter). Your numerous problems above suggests a kernel problem to me. What you do now is to follow UB way to flash a AOSP or whatever rom (not stock) and report if it solved your problems
Click to expand...
Click to collapse
Friend regret that I can not understand what I write, I apologize, also thanks for your help, I'll do what you recommended me, be installing a kernel or room cooked AOSP, I have installed the root in the only version that works on my ZR which is 4.1.2, then be installing the Recovery to test a kernel or room. Could you tell me which room should I install? You can give me the links? Thanks in advance for your help

Eduardo3107 said:
Friend regret that I can not understand what I write, I apologize, also thanks for your help, I'll do what you recommended me, be installing a kernel or room cooked AOSP, I have installed the root in the only version that works on my ZR which is 4.1.2, then be installing the Recovery to test a kernel or room. Could you tell me which room should I install? You can give me the links? Thanks in advance for your help
Click to expand...
Click to collapse
CM11 or AOSP based rom, check development section for ZR

sourabhp said:
CM11 or AOSP based rom, check development section for ZR
Click to expand...
Click to collapse
Amigo antes de flashear una room CM11 o Aosp debo abrir el Bootloader?

[CLOSED] Need help (.qcn backup) from XZ1c owner

During the process of flashing different ROMs on my XZ1 Compact something went wrong and its IMEI became damaged.
I've spent about a month trying to fix it with different apps and methods to no avail, and it seems the only thing that's left is to try using .qcn backup from a working XZ1c to restore my IMEI.
If someone is willing to provide .qcn backup so I can attempt a fix please let me know, I can explain how to extract it if you don't know (root and use of pc is required). Basically if I can't secure a .qcn backup from a working model I'll have to purchase another XZ1c to try to fix my current one, which is not the worst thing in the world but I'd rather avoid expenditure since I don't really need two of them--hence this thread.
Thanks everyone for your attention.

Thread closed! Based on the post history it can be validly assumed that this thread has been started to retrieve information about an IMEI change.
[CLOSED] Changing IMEI
Does anyone know how to change IMEI on XZ1c, preferably without root?
forum.xda-developers.com
[CLOSED] IMEI repair on Xperia devices?
Hi there. I've been trying to find a way to repair IMEI on my Xperia XZ1 Compact and could use some guidance. The methods I came across describe putting the phone into Diagnostics mode before the following steps can be taken, but no explanations...
forum.xda-developers.com
[CLOSED] del
del
forum.xda-developers.com

xperia, TA, keys

hi guys
I have a sony xperia xz2. Stock rom is on it.
I have wonderings about the TA partition. Im intented to use lineageos, to be a bit an ungafamnted phone. In the idea, I saw lately that unblock bootloader removes the TA keys (not partition?)
I unlocked it, but :
I still have the xperia stock rom
I had a message at startup saying bootloader is corrupted, but it starts stock rom anyway
in the "phone hidden menu", "suntory bloobs" is the only thing saying "error"
I never flashed anything on it yet.
I'd like to know :
is it possible to backup keys, in a way I dont see how unlock bootloader may wipe keys (as files on a specific partition?)?
what do I lose by going to LineageOS (except more privacy) regarding features/components
if it's possible to refresh to get new keys or regenerate one (with xperia companion?)
how could I check that keys are still alive (I dndt flashed anything), to backup them?
are they some users whom can describe if loss of keys are really shame or it's just a secondary issue?
thank you for feedback and answers