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Can DRM Keys be restored on the XZ1 after rooting?

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By AbrarZShahriar, Member on 18th December 2017, 06:24 AM
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I want to unlock the bootloader and root my XZ1 and use Magisk. Can the DRM keys be restored after rooting? Edit: Nevermind it seems the bounty for XZ1 DRM restore/fix is still going.
4rz0 18th December 2017, 09:16 AM
You answered it yourself.
No, it cannot. The DRM-Keys can't even be backed up, since the place where and how they are stored is unknown as of yet.

As a sidenote, for the XZ Premium, which uses the same chipset and similar software, there exists a DRM Fix which emulates the existence of the DRM keys, enabling you to use all protected features even after the keys are lost. It's currently in the works of being ported over to the XZ1 series of phones.
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11th November 2018, 03:26 AM |#3  
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The answer has changed; thanks to j4nn's glorious work, it is now possible to do exactly this. You can find instructions over on the XZ1 Compact forum: https://forum.xda-developers.com/xpe...ackup-t3795510
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11th November 2018, 05:09 PM |#4  
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"saving" the DRM-Keys means: backup of the device specific Trim Area

"restoring" means: copying the Trim Area back
THIS WILL result in a soft brick on a modified (rooted ...) ROM

What you can do: create a boot partition with the keys "baked in" -> ta_poc (search for it)
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