X compact: Do I need to backup DRM ?

[aiphes]

Hello

I own a clean X Compact phone and I want to unlock bootloader and root it ( Magisk) before install anything on it. Actually it is on Android 8 v34.4 and I can't backup DRM with indicated tools (backup TA), so do I need to backup DRMs if I don't use Sony services except the camera to take pictures ?
If yes, which tool can do this on Android 8 ?

Thanks

 

[aiphes]

Feedback on this.
After done the android 8 update to the last release from sept 2018, I was able to activate the OEM unlock and run fastboot unlock command.
Installation of TWRP is ok
Magisk cause Unsupported/Unknown image format with the v21 . Investigate to know why

 

[aiphes]

Trying to install DRM-Fix-system_Mode.zip and the phone boot loop on fastboot mode.. I'm looking to a way to uninstall this DRM Fix or flash another file,if someone can help.

 

[aiphes]

Finally install Lineage OS 16 after failed to install stock firmware with flashtool. Added OpenGApps and Magisk (v21) to disable non desired apps ( 95%)

 

[mp107]

It is better to backup the TA in case you would need to get back to the stock firmware or sell device in factory conditions (on stock ROM).
If you have already unlocked the bootloader without backing up the TA first then there is no way to bring the device back to the completely factory state.

 

[aiphes]

It is better to backup the TA in case you would need to get back to the stock firmware or sell device in factory conditions (on stock ROM).
If you have already unlocked the bootloader without backing up the TA first then there is no way to bring the device back to the completely factory state.

Thanks for your precisions.