This is my video how to root recovery drm key restore
What is a PRE-ROOTED Firmware
A pre-rooted firmware is a firmware, which already includes root. This is for example important if you want to update the firmware to a version, where there is no public root exploit. To flash a pre-rooted firmware, you need a recovery menu. An unlocked bootloader is not required.

On this tutorial I make rom/frimware for Sony Z2 D6503
Marshmallow 6.0.1
23.5.A.1.291_R6D

Tools link below:

1.PRFCreator
[ Ссылка ]

2.XpriaFrim (for stock frimware or .FTF file)
[ Ссылка ]

3.Dual_Z_Recovery
[ Ссылка ]

4.SuperSU
[ Ссылка ]

5.DRM FUNCTION KEY
[ Ссылка ]

Android Mobile Tips & Trick
Android Mobile Root
Android Mobile Update
Sony Xperia Mobile Update
Sony Xperia Root
Android Recovey
Android Recovery Install
Sony Xperia DRM Key
Sony Xperia DRM Key Backup & Restore
Sony Xperia Mobile Flash
Sony Xperia All Flash
Sony Xperia Flash Tools
Android Flash
Android Easy Flashing
Sony Xperia Flashing
Sony DRM Key Lost
Sony Backup DRM Key
Android Mobile Dead
Android Mobile Rom
Android Mobile Stock Rom

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