Unlocked bootloader, lost TA partition and DRM keys, can Sony fix?

[Lmno39]

Hey,

Unlocked the bootloader and installed CM. As a result of this, i lost my DRM keys and TA partition. While CM works fine i would like get my phone back to the state it was when it came out of the factory. I know this is out of warranty, but does anybody know if Sony can fix this and what it would cost me?

Thanks in advance!

[komilAD]

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@Lmno39 wrote:

Hey,

Unlocked the bootloader and installed CM. As a result of this, i lost my DRM keys and TA partition. While CM works fine i would like get my phone back to the state it was when it came out of the factory. I know this is out of warranty, but does anybody know if Sony can fix this and what it would cost me?

Thanks in advance!

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Haven't you read the risk part from their website before unlocking your bootloader.

http://developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader/

Sony already knows these issues and I believe they will never fix it.

[Thommo · Accepted solution]

The question was can Sony fix it and the answer is no however if you do want it back to stock with DRM keys then this would require a new motherboard

[Lmno39]

@KomilAD: Yes i have read the disclaimer. I am a huge CM fan that i took that for granted (afterwards i've learned about TA-backup, unfortunately) But since the CM12.1 for the Z3c has some issues and the update and recovery processes are not great i wanted to go back to original. I would have thought that Sony would have a software tool laying around which can generate new DRM keys.Like i said, i know this is out of warranty and i don't mind paying for service, but first i wanted to know if it was possible at all.

@Thommo: Thanks for the answer. Is this because the DRM keys are generated with a unique hardware identifier?

[komilAD]

I believe you are well known for flashing roms/mods so you might knew that some of your DRM features can be restored even if you haven't backed up TA partition, see this thread http://forum.xda-developers.com/crossdevice-dev/sony/xperia-z1-z2-z3-series-devices-drm-t2930672

[Lmno39]

Yeah i read that thread

I would prefer real DRM keys, but perhaps i can give this a try. Thanks for the reminder!

The fix does not work with AOSP based roms.. Maybe the sony stock rom is not that bad

[Baghairta]

My story:
I was flashing stock firmware via flashtool, accidentally flashed simlock.ta. It did not simlock the phone per se but the following problems started:
1. Simcard invalid (my sim works fine on other phones)

2. Camera focus not working

3. Camera freezes on capture

4. X-Reality not working

I read online and people told me that my TA partition was damaged. I do not have backup of my TA

I flashed the link you provided with locked bootloader I don't know how but it fixed all the problems except the simcard invalid problem. Would really appreciate any ideas on fixing that.

P.S I cannot unlock my bootloader, service menu says 'Rooting status: Unknown"