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How important are the DRM Keys?

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By Gnubaver, Senior Member on 28th March 2014, 04:18 PM
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What does the functions do that is lost when unlocking the bootloader?

And do they make a big difference to the phones functionality?
Last edited by Gnubaver; 28th March 2014 at 04:58 PM.
 
 
28th March 2014, 06:21 PM |#2  
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As i gather, you lose X-Reality and Bravia Engine functionality.
If you backup your TA I think you could restore them and relock bootloader.
Also if you're on 4.2 you will break your camera. 4.3 and up fixes this problem.

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28th March 2014, 10:58 PM |#3  
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I saw someone post that if you unlock on KK (4.4.2) you wont lose X-Reality and Bravia.
Only the captured images are slightly different...
29th March 2014, 12:22 AM |#4  
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what is this??
29th March 2014, 12:46 AM |#5  
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Quote:
Originally Posted by BASHARAWAD

what is this??

Something what you lose when you try to Unlock Your Bootloader.

---------- Post added at 12:46 AM ---------- Previous post was at 12:44 AM ----------

Quote:
Originally Posted by Gnubaver

And do they make a big difference to the phones functionality?

No, to me they don't but my only concern is the loss of quality in pictures, this is the only thing which stop me from Unlock my Bootloader.
29th March 2014, 12:15 PM |#6  
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Quote:
Originally Posted by eclyptos

Something what you lose when you try to Unlock Your Bootloader.

---------- Post added at 12:46 AM ---------- Previous post was at 12:44 AM ----------



No, to me they don't but my only concern is the loss of quality in pictures, this is the only thing which stop me from Unlock my Bootloader.

But you can just do a TA Backup?
29th March 2014, 12:17 PM |#7  
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Tes, but when you restore the TA backup you relock the bootloader...
29th March 2014, 12:23 PM |#8  
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Quote:
Originally Posted by Gnubaver

But you can just do a TA Backup?

Backup TA is just a Backup of your DRM keys, to not lose them permanently, so one day you want your phone back to Stock you have them and you can restore them BUT they are lost permanently when you Unlock Bootloader and they are not working, this do not effect the functionality of your phone but they affect the quality of your pictures. So apparently something they do.
29th March 2014, 12:28 PM |#9  
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Quote:
Originally Posted by eclyptos

Backup TA is just a Backup of your DRM keys, to not lose them permanently, so one day you want your phone back to Stock you have them and you can restore them BUT they are lost permanently when you Unlock Bootloader and they are not working, this do not effect the functionality of your phone but they affect the quality of your pictures. So apparently something they do.

Wait a minute, first you say they are not lost permanently by doing a backup, and then you say "you can restore them BUT they are lost permanently when you Unlock Bootloader and they are not working"

wtf?
29th March 2014, 12:33 PM |#10  
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Quote:
Originally Posted by Gnubaver

Wait a minute, first you say they are not lost permanently by doing a backup, and then you say "you can restore them BUT they are lost permanently when you Unlock Bootloader and they are not working"

wtf?

Just a language barrier I think

You can backup your TA (Which contains the DRM keys)

If you unlock your bootloader you lose DRM keys

If you restore your DRM keys by restoring your TA you relock the bootloader

Basically its not possible to have DRM keys on an unlocked bootloader
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29th March 2014, 12:57 PM |#11  
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Quote:
Originally Posted by Gnubaver

Wait a minute, first you say they are not lost permanently by doing a backup, and then you say "you can restore them BUT they are lost permanently when you Unlock Bootloader and they are not working"

wtf?

Sorry for my bad english,

DRM Keys are lost permanently "when" or "after" Unlocking Bootloader, so they will not work anymore, right? because they are lost. Your phone still working well but something apparently is affected like the Quality of the pictures.

Like @gregbradley said, If you made a Backup TA you can restore them by Relocking Booloader, they are working only with Locked Bootloader.

So why Unlock Bootloader? to flash Custom Roms with Custom Kernels. To get just Root you don't have to do it and Restore TA (Bootloader) can be done on Stock Kernel only if not you can brick your phone.

I hope I clarified.

Quote:
Originally Posted by gregbradley

Just a language barrier I think

..also I wake up few minuts ago...

@Gnubaver I forgot one thing. Losing DRM Keys (Unlocking Bootloader) mean that some features will be affected or not working like BIONZ Processing, X-Reality and Bravia Engine.

Somebody said that after Unlock Bootloader on 4.4 the features still working. On 4.3 with some fix X-Reality is back, ecc...all this was not confirmed yet if it's true but I think many Devs are working on it. For sure there is a lost in Quality on Pictures because of BIONZ Processing, so at the moment I will not recommend to Unlock any Bootloader, if not on your own risk.

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